WS&C – 2nd YearBy pulak.univ / February 1, 2024 Welcome to CBT Exam Preparation Try to repeatedly answer the questions till you get the CORRECT answers LET'S CONTINUE 1. Which is the law of friction? Friction force is independent over the area and shape of contacting surfaces Frictional force is inversely proportional to the normal reaction Frictional force acts in the same direction of motion Frictional force is not a dependent on nature of contacting surface None 2. What is the direction of frictional force against a motional object? Inclined to the object Opposite to the object Parallel to the object Perpendicular to the object None 3. Which force is directly proportional to the normal reaction between contacting surfaces? Pulling force Pushing force Frictional force Allied force None 4. Which one of the following acts in between the wheels and roads, if vehicles are able to run on roads? Friction Corrosion Erosion Motion None 5. Which is useful friction? Rings in the cylinder Crank shaft bearings Wheel hub bearings Brake shoe lining None 6. Which is wasteful friction? Rear axle gear Tyres on the floor Brake shoe lining Clutch lining None 7. Which is depends on the frictional force? Type of metals : Contact surface Quantity of the contacting metal Quality of metals None 8. How co-efficient of friction is expressed? It is expressed as the ratio of force and area It is the ratio between frictional force and normal reaction It is the ratio between normal reaction and the mass of the objec It is expressed as the ratio of weight and normal reaction None 9. Which symbol is used to denote co-efficient of friction? α (Alpha) μ (Meu β (Beta) γ (Gamma) None 10. What kind of friction is called if two objects are in contact at rest? Sliding friction Rolling friction Static friction Angular friction None 11. Which is the correct statement? Limiting friction is equal to sliding friction Rolling friction is more than the sliding friction Sliding friction is always less than limiting friction Limiting friction is always less than sliding friction None 12. What is the formula to find the force if the object is just move up the plane? None 13. Which of the angle is called angle of friction? Angle - FOS Angle - ROS Angle - POS Angle - ROF None 14. What is the co-efficient of friction if the angle of friction isq? Sin θ Cos θ Tan θ Cot θ None 15. What denotes the letter ʹRʹ in the given figure? Force Resistance Load Normal reaction None 16. What is the purpose of a lubricant? To increase the pressure To increase friction To reduce friction To reduce pressure None 17. What type of lubricant is used in wick feed lubrication system Lub-oil Grease Coolant Cutting oil None 18. Which lubrication system is provided with a ring oiler to splash lub-oil continuously around the parts? Gravity feed system Pressure feed system Splash feed system Force feed system None 19. Which one is the three types of lubrication system in general use? Force feed system, speed feed system, frictional feed system Velocity feed system, Speed feed system, Frictional feed system Gravity feed system, force feed system, splash feed system Splash feed system, Frictional force system, Speed feed system None 20. Which lubrication system employs oil holes in the machines? Gravity feed system Force feed system Splash feed system Velocity feed system None 21. What is the name of the lubrication system? Oil cup Wick feed Manual screw down Ring oiling None 22. Which is used to reduce the friction in machine parts? Kerosene Petrol Water Lubricants None 23. : Which is the main purpose of using the lubricant oil in engine moving partS To increase the efficiency To reduce friction To improve carrying capacity To improve the durability None 24. Which is the correct statement? Lubricants acts to prevent corrosion Lubricants acts as a seal Lubricants acts as a fuel Lubricants acts as a filter None 25. What causes the efficiency of a machine by maintaining the lubrication? Increases Decreases Remains same Does not affected None 26. What is the name of the instrument used for lubrication? : Oil -can Automatic hydraulic - Type pressure gun T-handle pressure gun Pressure grease gun None 27. Which principle of lubrication can be employed? Pressure feed system Splash feed system Gravity feed system Force feed system None 28. Which way the coolant acts as a lubricant? To carry away dust To carry away the heat To carry away moisture To carry away dryness None 29. What is the force required to move a body of mass 1000 kg if the co-efficient of friction is 0.4 (assume 1kg = 10 N)? 4000 N : 400 N 40 N 4 N None 30. What is the co-efficient of friction if a force of 30 N is required to move a body of mass 35 kg (Assume 1kg=10N)? 8.57 0.082 0.0857 0.0085 None 31. How much force is required to move an object weights 20 kg, if the value of m = 0.24? 4.8 kg 83.33 kg 1.2 kg 0.48 kg None 32. What is weight of an object could be moved by a force of 30 kg if co-efficient of friction is 0.0125? 80 kg 2430 kg 72000 kg 2400 kg None 33. What is the angle of inclination if a weight of 150 kg is in equilibrium and the value of m is 0.5773? 30° 45° 60° 90° None 34. How much force is required to just slide a 20 kg object lying on a horizontal table if the m is 0.2? 2 kg 3 kg 4 kg 5 kg None 35. What is the force required to move a 20 kg object with a co-efficient of friction is 0.24? 4.8 kG 0.48 kg 0.048 kg 0.0048 kg None 36. What is co-efficient of friction for pulling a load of 400 kg by a force of 40 kg? 0.01 0.2 0.1 0.02 None 37. How much will be the co-efficient of friction for moving a body of mass 80 kg by a force of 40 kg on a horizontal surface? 0.05 0.5 0.65 0.45 None 38. How much will be the weight of a body which will be moved by a horizontal force of 50 kg against a frictional resistance of 0.25? 150 kg 200 kg 250 kg 300 kg None 39. What will be the approximate angle of inclination of an object if the co-efficient of friction m=0.84? 60° 45° 40° 30° None 40. What is the work done to move a body of mass 60 kg to a distance of 5 meters, if the coefficient if friction between body and the plane is 0.2? 12 kg 60 kg 12 m-kg 60 m-kg None 41. How much will be the work done in moving a 10 kg object resing on a horizontal plane through a distance of 10 meter (assume m= 0.15)? 1.5 m-kg 15 m-kg 0.15 m-kg 150 m-kg None 42. How much force is required to stop a vehicle of mass 1000 kg running on a road with coefficient of friction between the tyres and the road is 0.4? 3000 kg 450 kg 350 kg 400 kg None 43. Which affects the centre of gravity of the object? Weight Mass Density Shape None 44. What is the name of the point at which all the weight of the body concentrated? Initial point Centre of gravity Centroid Central point None 45. Where the centre of gravity of a circle lies? At its centre Any where on its radius Any where on its circumference Any where on its diameter None 46. What is the centre of gravity of a right circular cone from its base? h/2 h/3 h/4 h/5 None 47. What is the centre of gravity of a rectangular body? Longer side of rectangle Shorter side of rectangle At the point of intersection of its diagonals At the corners None 48. What is the centre of gravity of a solid hemisphere from its base? 4r/5 3r/8 3r/4 r/2 None 49. What is the centre of gravity of a sphere? At the centre On the circumference At the diameteR At the radius None 50. Which state of equilibriumʹs example is A cone resting on its tip? Stable Neutral Unstable Horizontal None 51. Which one of the following geometrical shapeʹs centre of gravity lies from its base is 1/3 of its height? Square Rhombus Triangle Cone None 52. Which state of equilibriumʹs example is, A cone resting on its base? Un-stable Neutral Stable Bothe A and B None 53. Where is the centre of gravity in ʹTʹ section? 8.545 cm 6.5 cm 8.02 cm 7.5 cm None 54. What is the centre of gravity of the rectangle? (6,3) (6,6) (6,1.5) (1.5, 3) None 55. What is the centre of gravity of the lamina? 1.55 cm 2.0 cm 1.5 cm 1.45 cm None 56. What is the centre of gravity of the object? 90.6 mm 90.0 mm 89.2 mm 89.25 mm None 57. What is the centre of gravity of the conical object? 42.5 mm 44.3 mm 42.3 mm 43.85 mm None 58. What is the centre of gravity of the square? (30, 20) (20,30) (30, 30) (25, 30) None 59. What is the centre of gravity of the cone base 10cm and height 50 cm? 10.5 cm 12.5 cm 11.25 cm 12.75 cm None 60. What is the centre of gravity of a semi circle of diameter 12 cm? 2.24 cm 2.54 cm 3.25 cm 2.75 cm None 61. Which formula is suitable for the area of a circle, whose diameter is (d)? None 62. What is the circumference of a semi circle? None 63. What is the area of irregular shape by simpsonʹs is rule? None 64. What is the name called biggest chord of the circle? Arc Diameter Radius Diagonal None 65. What is the formula for circumference of a circle? None 66. What is the formula for area of the semi circle? None 67. What is the formula for area of the circle? πd² / 2 πr² 2πr πd / 2 None 68. What is the area of the irregular surface? 1400 mm² 1450 mm² 1500 mm² 1200 mm² None 69. What is the area of the shaded portion, Equilateral Triangle side is 6cm and circle radius is 1.5cm? 8.52 cm² 12.75 cm² 9.5 cm² 12.25 cm² None 70. What is the area of the irregular surfaces? 2500 mm² 3544 mm² 3250 mm² 3444 mm² None 71. What is the area of the irregular surfaces? 4800 mm² 4820 mm² 4830 mm² 4843 mm² None 72. What is the area of irregular surfaces? 1350 mm² 1175 mm² 1150 mm² 1250 mm² None 73. What is the length of arc of a sector, whose perimeter is 64.8cm and radius is 12.4 cm? 40 cm 45 cm 40.8 cm 42 cm None 74. What is the length of arc of the sector whose radius is 15 cm and the intended angle is 30°? 7.85 cm 7.25 cm 6.75 cm 6.85 cm None 75. What is the area of the sector, if the diameter is 12 cm and the angle is 60°? 18.0 cm² 17.75 cm² 19.00 cm² 18.84 cm² None 76. What is the formula for area of the segment of a circle? Area of the sector - Area of the triangle Area of the circle Area of the sector Area of the triangle - Area of the sectoR None 77. What is the area of the circle, if the circumference of the circle is 44cm? 128 cm² 130 cm² 154 cm² 129 cm² None 78. What is the area of the irregular surfaces? 2600 unit² 2590 unit² 2625 unit² 2620 unit² None 79. What is the area of the irregular surfaces? 4200 $4300.00 $4500.00 4400 None 80. What is the radius of the circle if the angle of sector is 90° and the area of the circle is 196 cm2? 15.77 cm 15 cm 14.85 cm 14.95 cm None 81. What is the formula for perimeter of a sector? 2l + r : l + 2r πr² 2πr None 82. What is the area of conical object? 5100 mm² 5120 mm² 5125 mm² 5158.8 mm² None 83. What is the area of the lamina? 14,800 mm² 14,600 mm² 14,650 mm² 14,750 mm² None 84. What is the area of the sector, whose diameter is 40 mm and angle is 120°? 418.66 mm² 400.50 mm² 415.5 mm² 416.6 mm² None 85. What is the length of arc of a sector, whose radius is 15 cm and angle is 40°? 9.75 cm 9.8 cm 10.60 cm 10.4 cm None 86. What is the length of arc of a sector whose radius is 3.6 cm and angle is 36°? 2.10 cm 2.26 cm 22.6 cm 21.0 cm None 87. What is the area of the surface? 1750 mm² 1775 mm² 1805 mm² 2600 mm² None 88. What is the name of the shaded portion? Segment Sector Arc Chord None 89. Which line is called as chord? ED AB OD OE None 90. What is the area of the circle, whose diameter is 50 cm? 1900 cm² 1950 cm² 1962.5 cm² 1960 cm² None 91. What is the name of the region of a circle between any two point on the circumference? Arc Segment Sector Chord None 92. What is the radius of the circle, whose circumference is 440 cm? : 71.5 cm 70 cm 70.5 cm 72.2 cm None 93. What is the area of a circular surface if the radius is 14 cm? 615.44 cm² 614.5 cm² 612.25 cm² 612.44 cm² None 94. What is the circumference of a circle whose diameter is 7 cm? 22 cm 44 cm 25 cm 21 cm None 95. What is the radius of a circle whose diameter is 44 cm? 44 cm 22 cm 23 cm 20 cm None 96. What is the diameter of the circle, if the area of the circle is 78.5cm²? 5 cm 10 cm 15 cm 5.5 cm None 97. What is the area of the circle if the radius is 10 cm? 314 cm² 31.4 cm² 30.4 cm² 3.14 cm² None 98. What is the radius of the semicircle, if the circumference of the semicircle is 28.26 cm? 5.49 cm 6.49 cm 8.5 cm 8.75 cm None 99. What is the diameter of the semicircle, if the circumference of the semicircle is 21.98 cm? 8.55 cm 8 cm 7.55 cm 7 cm None 100. What is the area of the semicircle, if the diameter is 14 cm? 70 cm² 76.93 cm² 75.06 cm² 86.93 cm² None 101. What is the diameter of the circle, if the area of the circle is 706.5cm²? 29 cm 29.5 cm 30 cm 30.5 cm None 102. What is the diameter of the circle, if the circumference is 31.4 cm? 5 cm 10 cm 8 cm 8.5 cm None 103. What is the area of the lamina? 1470.55 1473.66 1472 1472.5 None 104. What is the area of the irregular lamina? 550 cm² 549.76 cm² 560 cm² 555 cm² None 105. What is the area of the lamina? 125.5 cm² 120.5 cm² 127.5 cm² 126.5 cm² None 106. What is the area of irregular surfaces? 27,475 mm² 27,500 mm² 27,350 mm² 26,500 mm² None 107. What is the area of shaded portion whose OD = 38 mm, ID = 32 mm? 325.4 mm² 329.7 mm² 305.5 mm² 320.5 mm² None 108. What is the area of irregular surfaces whose equilateral triangle size is 20 mm? 3000 mm² 3080 mm² 3026.8 mm² 3060 mm² None 109. What is the area of shaded portion. Whose square size 300mm? 58,000 mm² 58,400 mm² 59,000 mm² 58,600 mm² None 110. What is the area of shaded portion? 1000 mm² 1500 mm² 1100 mm² 1075 mm² None 111. What is the value of 14x+3y+25x+2y? 17x + 27y 16x + 28y 39x + 5y 44xy None 112. What is the multiplication value of 5a²b x 8a⁵b³? 40a⁷b⁴ 40a³b² 40a⁴b⁷ 40a²b³ None 113. What is the simplified value of (3x + 15) / 5x + 25) : 5/3 3/5 -5/3 -3/5 None 114. What is the value of x if 13+x =20? 8 7 9 13 None 115. What is the value of x, if x (120) = 960? 6 7 8 10 None 116. What is the formula for aᵐ x aⁿ? aᵐ⁺ⁿ aᵐ⁻ⁿ aᵐⁿ n.aᵐ None 117. Which is the formula for aᵐ / aⁿ aᵐ⁺ⁿ aᵐ⁻ⁿ aᵐ ˣ ⁿ (aᵐ)ⁿ None 118. What is the value of any number raised to the power of 0? 0 1 -1 α None 119. What is the value of 1 / aᵐ ? aᵐ a-ᵐ ᵐ√a ᵃ√m None 120. Which is equal to (aᵐ)ⁿ? aᵐ⁻ⁿ aᵐ⁺ⁿ aᵐ/ⁿ aᵐⁿ None 121. What is the expanded form of (a+b)²? a² + 2ab + b² a² - 2ab + b² a² + 2ab - b² -a² - 2ab + b² None 122. What is the formula for (a-b)²? a²- 2ab + b² a² + 2ab + b² a² - 2ab - b² -a² - 2ab - b² None 123. Which is equal to (a+b)²-(a-b)²? 2ab 3ab 4ab 5ab None 124. What is the value of a x a² x a³ x a⁴ ? a⁷ a⁸ a⁹ a¹⁰ None 125. What is the value of (a⁵)⁷? a³⁵ a1² a²1 a²² None 126. What is the value of 625°? 0 1 525 25 None 127. What is the value of 1 / aˉ⁵ ? a⁵ a⁻⁵ 5a -5a None 128. What is the value of 5x⁴ / 5x³ 5x 5x² x 5x⁴/³ None 129. What is the subtracted value of 3x - 4x² +2y² from 4y²-2x + 8x²? 2y²- 5x + 12x² : 2y²+ 5x -12x² 2y² - 5x -12x² -2y²-5x + 12x² None 130. What is the value of adding (5x+2y), (4x - 7z) and (15z - 3y)? 9x - y + 8z x - 9y + 8z x + 9y + 8z 9x + y - 8z None 131. What is the value of 12x³y² / 4x²y? 8xy 16xy 3xy -3xy None 132. What is the value of x, if 3 (2x - 4) = -4x + 28 ? 4 8 6 12 None 133. What is the value of x if (x + 2) / 2 = 19? 38 33 35 36 None 134. What is the value of x if 11x+4=37? 2 3 4 5 None 135. What is the value of 1/aᵐ? aᵐ a-m √aᵐ a1 None 136. What is the value of am/n? am-n am+n : 1 / aᵐ ⁿ√aᵐ None 137. Which is the expansion of a³ + b³? (a-b) (a² + b² - ab) (a+b) (a² + b² - ab) a³ + b³ + 3ab (a+b) a³ - b³ + 3ab (a-b) None 138. What is the expansion of (a+b+c)²? a² + b²+ c²+ 2 (ab + bc + ca) a² + b² + c²- 2ab + 2bc + 2ca a² + b² + c² + 2ab - 2bc + 2ca a² - b² - c² + 2ab + 2bc + 2ca None 139. Which is expanded form of a³- b³? (a+b) (a² - b²- ab) (a-b) (a² + b² + ab) (a-b) (a² - b² - ab) (a-b) (a² - b²+ ab) None 140. What is the value of (6³) / ((-3)³) ? 8 -8 27 -27 None 141. Which is elastic material? Nylon Polystyrenes Celluloid Polycarbonates None 142. Which is thermo plastic material? Butyl rubber Nylon Neoprene Vinyl polymers None 143. What is the maximum percentage of stretch of its original length is allowable for elastic materials? 100% 200% 300% 400% None 144. What is the ratio between the change in dimension to its original dimension of the substance? Stress Strain Poissonʹs ratio Factor of safety None 145. What is the unit of strain? Kg/cm² Newton/metre² Metre No unit None 146. What is the ratio of change in length to original length? Linear strain Lateral strain Volumetric strain Poissonʹs ratio None 147. What is the ratio between lateral strain and longitudinal strain? Hooks law Youngʹs modulus Bulk modulus Poissonʹs ratio None 148. Which symbol is used to express change in length? L ẟl I e None 149. Which one is the ratio of stress? Load and area Load and direction Load and diameter Load and time None 150. Which force acts on rivets? Tensile force Compressive force Shear force Bending force None 151. Which type of stress? Tensile stress Compressive stress Shear stress Torsional stress None 152. What is the formula for bulk modulus? Tensile stress/Tensile strain Compressive stress/Compressive strain Volumetric stress/Volumetric strain Shear stress/Shear strain None 153. Which law states that within elastic limit stress is directly proportional to strain? Newtons law Hooks law Joules law Charles law None 154. What is the name of the point ʹCʹ? Yield point Elastic limit Ultimate load Fracture None 155. What is the term used for maximum stress attained by a material before rupture? Tensile stress Compressive stress Working stress Ultimate stress None 156. What is the ratio between ultimate stress to working stress? Bulk modulus Youngʹs modulus Factor of safety Modulus of rigidity None 157. What is the ratio of ultimate load to area of original cross section? Factor of safety Yield point Ultimate stress Youngs modulus None 158. What does the point ʹbʹ denotes in the stress-strain graph? Elastic limit Yield point Limit of proportionality Ultimate load None 159. What is the ratio of shear stress to shear strain? Modulus of elasticity Modulus of rigidity Bulk modulus Yield point None 160. What is the ratio between stress and strain? Yield point Factor of safety Youngs Modulus Poissonʹs ratio None 161. Which force acts on crank shaft? Shear stress Torsional stress Tensile stress Compressive stress None 162. Which is thermosetting plastic? Vinyl polymers Polystyrenes Celluloid Melamine resins None 163. What force will be required to punch a hole of 10 mm dia in a 1 mm thick plate, if the allowable shear stress is 50N/mm²? (π = 22/7) 1757 N 1575 N 1571.4 N 1577 N None 164. What is the tensile stress if a square rod of 10 mm side is tested for a tensile load of 1000 kg? 1 kg/mm² 10 kg /mm² 100 kg/mm² 1000 kg/mm² None 165. What is the tensile strain if a force of 3.2 KN is applied to a bar of original length 2800 mm extends the bar by 0.5 mm? 0.0001786 0.0001687 0.0001867 0.0001968 None 166. How much strain is developed in an iron rod of 1 metre length gets elongated by 1 cm, if a force of 100 kg is applied at one end? 0.1 0.01 0.001 0.0001 None 167. What is the youngs modulus if a wire of 2m long, 0.8 mm2 in cross section increases its length by 1.6 mm on suspension of 8 kg weight from it? 1.25 kg/mm² 12.5 kg /mm² 125 kg/mm² 12500 kg/mm² None 168. What is the safe stress if the ultimate stress of a material is 35 kg/mm² and factor of safety is 5? 0.143 0.7 1.43 7 None 169. Which type of stress? Tensile stress Compressive stress Shear stress Torsional stress None 170. What are the various types of heat treatment processes? Annealing, Normalising, Hardening and Tempering Normalising, Heating, Cooling and Painting Hardening, Soaking, Painting and Packing Tempering, Cooling, Packing and Solling None 171. What is the process of heat treatment? The process of heating and cooling to change the structure and properties The process of heating to change the dimensions The process of cooling to measure the dimensions The process of heating and bending as per our requirement None 172. What are the various stages of heat treatment? Heating, Cooling and Quenching Quenching, Cooling and Heating Heating, Soaking and Quenching Soaking, Quenching and Cooling None 173. What is the name of the structure formed, if a steel is heated for about 723°C? Cementide Austenite Martensite Ferrite None 174. Which heat treatment process is done to refine the grain structure of the steel? Annealing Normalising Hardening Tempering None 175. What is the name of heat treatment process done to relieve strain and stress? Normalising Annealing Hardening Tempering None 176. Which process produce equilibrium conditions? Annealing and Hardening Normalising and Tempering Annealing and Normalising None 177. None 178. Which process steel is heated in a carbonaceous atmosphere for the penetration of carbon? Case hardening Nitriding Carburising Induction hardening None 179. Which is the suitable nitriding process for all alloyed and unalloyed steels? Silver nitriding Nitriding in salt-bath Nitriding in Quenching tank Gas nitriding None 180. None 181. What is the name of the heat treatment process, where the metal is heated and quenched in water or oil? Hardening Normalising and Tempering Annealing Tempering None 182. Which is a kind of surface hardening process? Cementide Ferrite Nitriding Tempering None 183. How much time is allowed normally in soaking zone for a 10mm thick metal piece while hardening? 5 minutes 10 minutes 15 minutes 20 minuteS None 184. What is colour of a metal piece when heated to 250°C while doing the tempering process? Blue Brown Purple Pale None 185. What is the purpose of tempering a steel? To reduce the brittleness To remove the ductility To increase the hardness To increase the brittleness None 186. What is discount? Selling price is less than Cost price Selling price is greater than Cost price The reduction given to the selling price of a product : Selling price + discount None 187. What is a profit? Selling price - Cost price Cost price - Selling price Selling price + Cost price Cost price + Selling price None 188. What is the term, if an article is purchased? Selling price Cost price Margin price Discount price None 189. What is the expanded form of S.P? Selected Price Special Price Selling Price Super Price None 190. Which is the short form of profit and loss statement? P & L PR & LS PRO & LOS L & P None 191. What is denoted as ʹIʹ? Principal Interest Rate Year None 192. How the ʹPrincipalʹ is denoted in simple interest calculation? ʹPʹ ʹIʹ ʹRʹ ʹnʹ None 193. What is the formula for the calculation of simple interest? None 194. What is the formula for compound interest, if compounded Annually? None 195. How the years is denoted in simple interest calculations? P I n r None 196. How the profit / gain is expressed? ₹ $ % * None 197. What is the formula to find Loss% None 198. What is the cost price (C.P) formula if there is a profit? None 199. What is the profit amount, if the i - phone cost price is Rs.50000/- and selling price is Rs.70000/-? Rs. 2000/ Rs. 10000/- Rs. 20000/ Rs. 50000/- None 200. What is the selling price, if the profit is 5% for a computer table bought at Rs.1150/- with Rs.50/- as a transport charge? 1160 1620 1060 1260 None 201. What is the cost price if the product is sold at ₹ 572 with a profit of ₹ 72? 500 1000 644 472 None 202. What is the profit % if the cost price of 16 bolts is equal to the selling price of 12 bolts? 13.33 23.33 33.33 : 43.33 None 203. What is the selling price if the cost price is Rs.7282/- with a profit of Rs.208? Rs.7074 Rs.7698 Rs.7290 Rs.7490 None 204. What is the interest earned, if the principal is Rs.12000/- becomes to an amount of Rs.15600/-? Rs.2600 Rs.3600 : Rs.4600 Rs.5600 None 205. What is the principal amount deposited, if the maturity proceeds to an amount of Rs.25000/- and interest earned Rs.6000/-? Rs.31000/- Rs.19000/- Rs.20000/ Rs.25000/- None 206. What is the interest earned, if the principal is for Rs.12500/- maturity becomes to a amount of Rs.17500/-? Rs.30000 Rs.25000 Rs.5000 Rs.5500 None 207. What is the matured amount for the deposit of Rs.5000/- and the simple interest earned for Rs.500/-? Rs.4500 Rs.5500 Rs.6000 Rs.6500 None 208. What is the simple interest for the principal amount of Rs.100000 at 10% per annum for 1 year period? Rs.1000/- Rs.5000/ Rs.50000/ Rs.10000/- None 209. What is the compounded annual interest, for a loan amount of Rs.80000/- at 10% per annum for a period of 2 years? Rs.16800/ Rs.92400/- Rs.96800/- Rs.94800/ None 210. What is the compounded amount, if the principal of Rs.30000/- and interest earned at 7% per annum is Rs.4347? Rs.30347/- Rs.32347/- Rs.33347/- Rs.34347/- None 211. What is the difference between the simple and the compound interest amount at 5% per annum for 2 years on a principal of Rs.20000/-? Rs.5 Rs.25 Rs.50 Rs.55 None 212. What is the maturity amount if Rs.20000 is deposited at 5% compound interest per annum for 2 years? : Rs.22000 Rs.22050 Rs.22500 Rs.25000 None 213. What is the compound interest on a principal of Rs.25000/- after 3 years at the rate of 12% per annum? Rs. 9000 Rs.9720 Rs.10123.20 Rs.10483.20 None 214. What is the other term used for reference table? Dictionary Biography Bibliography Information Table None 215. Which hand book referred by machine engineer? Parryʹs cheorikal CRC Mark standard Oxford Dictionary None 216. What is a hand book? Model book of various works Type of reference work or other collection of instruction Design book of latest works Dictionary of materials None 217. Which standard schedule of rates to be considered for estimation? Standard schedule of rates of the last year Standard schedule of rates of the average of the last 10 years Standard schedule of rates of the average of last 5 years Standard schedule of rates of the current yea None 218. What is an over estimate? When an estimate is exceeded to actual estimate When an estimate is fell short of the actual estimate When an estimate perfectly matches the actual estimate No work started as per estimate None 219. What is a under estimate? No work started as per estimate An estimate perfectly matches with actual An estimate is fell short of the actual estimate An estimate is exceeded the actual estimate None 220. What is the term used for the method of calculating various quantities and expenditure on a particular job or process? Estimation Drawing Specification Plan None 221. What is the main factor to be considered while preparing a detailed estimate? Shape of material Brand of the materials Quantity, availability and transportation of materials Location of material None 222. Which authority publishes schedule of rates? Individual Corporate Partnership firm Government departmen None 223. What is the name of a booklet, the rates of various terms are indicated? Price bank Price bunch Price tag Price catalogue None 224. What is the term, for the details of materials, brand name, grade of quality, rating of current and voltage etc.? Drawing Specification of materials Raw materials Price catalogue None 225. What is the use of engineering drawing? For estimation of material and execution of work For colourful appearance : For reducing the cost For increasing the cost None 226. : What is the other term of pocket reference in engineering works? Hand tool Hand book Good book New book None 227. Which one is related to estimation of work? Bill of material Packing Information table Hand book None 228. What is a total cost? Raw material cost only Machining cost only Raw materials cost and machining cost Advertisement cost only None 229. Who prepares the cost of estimation? Operator Quality Inspector Estimator Draughts man None 230. Which one is included in machining estimation sheet? Transport cost Advertisement cost Raw material cost Tax None 231. What is the minimum permissible size of aluminium wire used in estimation? 1.5 sq.mm 2.5 sq.mm 5 sq.mm 3.5 sq.mm None 232. What is the minimum permissible area of conductor (U/G cable) for three and half cores cable? 25 sq.mm 50 sq.mm 5 sq.mm 100 sq.mm None 233. Which one is the most reliable estimate? Preliminary estimate Plinth area estimate Cube rate estimate Detailed estimate None 234. Which IE rules are to be verified on completion of wiring on any new installation? IE Rules, 1956 IE Rules, 1960 IE Rules, 1961 IE Rules, 1967 None 235. What describes the detailed specification for the item of work? Quality, Quantity, Workmanship, Method of execution Colour Tax, Transport, Overhead expense Maintenance, Stock, Cost None 236. None 237. Which of the impurity in cast iron makes it hard and brittle? Silicon Sulphur Manganese Phosphorus None 238. What cables are used for 132KV lines? High tension Super tension : Extra high tension Extra super voltage None 239. Which specification is other than general specification? Brief specification Bulk specification Detailed specification Main specification None 240. : What percentage of water absorbed by a good building stone? Less than 10% Less than 20% Less than 8% Less than 5% None 241. What is the relative permittivity of rubber? Between 2 and 3 Between 5 and 6 Between 8 and 10 Between 12 and 14 None 242. What is the weight of the iron ball has volume of 250 cc and density 7.5 gm/cc? 1750 gram 1875 gram 1975 gram 1785 gram None 243. What is the weight of a rectangular block of a cost iron of 250cm X 20cm X 8cm (density of cast iron is 7.8 gm/cm³)? 312 kg 372 kg 410 kg 525 kg None 244. What is the total estimation cost for making the component of 8 drilled hole dia 10 mm and 4 Numbers of M6 taps in the plate, if Rs.8/- per drilled holes and Rs.12 per drill and tap? Rs.102 Rs.100 Rs.112 Rs.110 None 245. What is the estimation of milling cost of a rectangular block size 100 X 80 X60 mm, if cost of the milling is Rs.2/sq.cm? Rs.652/- Rs.752/ Rs.572/- Rs.960/ None 246. What is the total wattage in a room if 2 tube lights of 50W rating, 2 fans of 80W rating, 2 numbers of light points of 60W rating, one fan point of 60W rating and one 3 pin socket of 100W rating 340 W 440 W 540 W 640 W None 247. What is the total labour charges for a particular wiring work completed in 2 days by one electrician and one helper.(Electrician @ ₹800/day and helper @ ₹ 400/day) Rs. 2000 Rs. 2400 Rs. 3000 Rs. 1400 None 248. What is the total cost of painting of a class room including ceiling, if the size of length is 6m, breadth is 5m and height is 4m. (Painting + labour cost Rs.150/- per sq.m Rs.15000/ : Rs.16700/- Rs.17700/- Rs.18700/- None 249. What is the total cost to assemble 10 personal computer systems, spares cost as given for one system: 1 TB hard disc Rs.4500/-, Intel i3 mother board Rs.7000/-, SMPS Rs.2500/-, monitor Rs.6000/-, keyboard Rs.1000/-, other material cost (Switches, USB, Cables etc.,) Rs.6500/-? Rs.275000/ Rs.250000/- Rs.225000/- Rs.265000/- None 250. What is the total construction cost of a house construction area of 3000 sq.ft. (cost of construction Rs.2000/- per sq.ft including material and labour)? Rs.30,000,000 Rs.60,00,000 Rs.6,00,000 Rs.6,000,000 None 251. What is the total cost of Air-conditioners installed in a college, 40 class room-each 1 Airconditioner, Computer lab 5 Air- conditioners and conference hall 5 Air-conditioners (Cost of one air conditioner Rs.30000/- including installation)? Rs.10 lakhs Rs. 20 lakhs Rs. 12 lakhs Rs. 15 lakhs None 252. What is the total estimation cost for mandrel, if density is 7.8 gm/cm² and material cost is Rs.240 kg? 0.65 kg 0.90 kg 0.70 kg 0.75 kg None 253. What is the estimation of labour charge for making inside square of size 30 X 30 mm, if making charge Rs.500/10cm²? Rs.500/- Rs.450/- Rs.350/- Rs.400/ None 254. What is the process for increasing toughness and decreasing brittleness? Hardening Tempering Normalizing Annealing None 255. After heat treatment, a component cracks. What is the possible reason behind that? It was heated for too long It wasn't cleaned properly before heating. It was immediately cooled in brine. It was rapidly cooled in air. None 256. To get a good result from annealing, the heated job of steel is cooled- slowly in the furnace itself by switching off the Supply of heat by removing the job from the furnace and keeping it in the open air ( by removing the job from the furnace and keeping it in flow of air by removing the job from the furnace and keeping it in a tank full of water None 257. Which heat treatment method is used to make a hard job suitable for machining Hardening Tempering Normalizing Annealing None 258. In order to soften the iron, which heat treatment method is required? Normalizing ) Annealing Tempering Hardening None 259. Case hardening is normally done for the steel that contains- low carbon high carbon high chromium H.S.S. None 260. Tempering is done in order to- improve strength ( increase hardness decrease stress increase machining capability None 261. The method of heating high-carbon steel at critical temperature and gradually cooling it is called- normalizing ) annealing hardening tempering None 262. In order to remove excessive brittleness, chisel is processed with the method called tempering hardening carburizing annealing None 263. Carbon steel is tempered at 200°C to 300°C 100°C to 150°C 550°C to 600°C 400°C to 500°C None 264. Measurement gauge should be wear resistant. By which of the following heat treatment methods can this property be induced? Normalizing Case hardening Annealing Tempering None 265. A job of carbon steel is heated a little above 730°C. It is kept at this temperature for a few hours and then cooled slowly. For this, which heat treatment method is used? Normalizing Case hardening Hardenig Annealing None 266. The properties of steel are changed by suitable heat treatment methods. Which method is suitable to increase abrasion resistance in steel? Hardening ) Tempering Annealing Normalizing None 267. Which heat treatment method is generally used to remove internal stress by hardened tool? Stabilizing Annealing Normalizing Tempering None 268. Normalizing is heating steel below 400°C and then cooling it in water heating steel 50°C above high critical temperature and letting it inside the furnace after switching off the furnace heating steel 50°C above high critical temperature and immediately cooling it in water ( heating steel 50°C above high critical temperature and cooling it at room temperature under steady air None 269. The objective of steel hardening is- to increase cutting capability to increase erosion resistance to increase hardness all of the above. None 270. The purpose of annealing is to- soften the metal ) harden the metal ( improve the metal correct the formation of metal None 271. The first stage of case hardening is carburizing. The purpose of carburizing is- to increase the percentage of carbon in the steel job to increase the percentage of carbon in steel's core to increase the percentage of carbon on surface ( to decrease the percentage of carbon in the steel job None 272. In which activity a metal's mechanical properties can be changed as desired by changing the metal's internal structure with the help of heating and cooling? Mechanical treatment Heat treatment Electrical treatment Chemical treatment None 273. What is the maximum temperature at which the internal structure of metal starts to change? Critical Temperature Higher Critical Temperature Lower Critical Temperature All of the above None 274. The objective of steel's tempering is- to get rid of internal stress to control hardness and toughness to decrease brittleness all of the above None 275. Which methods are used under the process of heat treatment? Annealing Normalizing Hardening All of the above None 276. The process of heating the steel till high critical point and then cooling in oil or water is called- normalizing lubrication quenching heat treatment None 277. The main benefit of flame hardening is- the required part of the job can be heated the required spot of the job can be hardened time saving all of the above None 278. Delicate parts are quenched in oil. The possible reason behind this is to remove cracks to remove brittleness to soften them to make them ductile None 279. The hardness of steel depends upon carbon content ) the temperature at which it is heated the rate of cooling all of the above None 280. Sometimes, the case-hardened components are heated again at a temperature of 200°C. The possible reason behind this is- to remove quenching stress to remove cracks to increase ductility to soften None 281. Due to increase in content of carbon in steel- the hardness increases the robustness increases the robustness decreases the ductility increases None 282. . High speed steel is preheated before heating at the right hardening temperature. The reason behind this is- to remove quenching stress to remove cracks to increase ductility to soften None 283. . When carbon steel is heated above high critical point, and then cooled immediately, which properties of steel is enhanced? Hardness Malleability Ductility Elasticity None 284. . Hardening is- heating steel below 400°C and then cooling in water heating steel 50°C above high critical point and letting it stay inside after switching off the furnace heating steel 50°C above high critical point and immediately cooling in water heating steel 50°C above high critical point and cooling in steady air at room temperature None 285. The lower critical temperature of high carbon steel is- 900°C 960°C 560°C 723°C None 286. Carbon dissolves and makes a solid solution during heat treatment. What is the process called? Ferrite Pearlite Austenite Cementite None 287. Which of the following metals has hot hardness ranging from 200°C to 250°C? High speed steel tool. High carbon steel tool Cemented carbide tool Stellite tool None 288. Annealing is done in order to- increases the machining property increase hardness increase toughness reduce strain None 289. The normalizing method in heat treatment is done to- improve ductility ) bring precision in coarse structure increase hardness increase brittleness None 290. . For HSS hardening, the soft metal is first overheated and then cooled in- oil air water ashes of dung cakes None 291. When steel's carbon content is 0.83%, it increases steel's- hardness strength malleability ductility None 292. Heat treatment is- a method to bring the properties of a metal to a definite state heating steel to the relevant temperature and then cooling it slowly at room temperature under steady air heating steel to relevant temperature and cooling it within the furnace a case hardening method None 293. What is the use of hardening To increase erosion resistance and brittleness To soften the metal To refine the structure To increase toughness and decrease None 294. What do you mean by tempering? Heating steel below 400°C and then cooling it in water. Heating steel 50°C above high critical temperature and letting it inside the furnace after switching off the furnace. Heating steel 50°C above high critical temperature and immediately cooling it in water. Heating steel 50°C above high critical temperature and cooling it at room temperature under steady air. None 295. What is the use of normalizing? It improves machinability It creates uniform fine grain structure. It increases brittleness It improves toughness. None 296. Annealing is- heating steel below 400°C and then cooling it in water heating steel 50°C above high critical temperature and letting it inside the furnace after switching off the furnace heating steel 50°C above high critical temperature and immediately cooling it in water heating steel 50°C above high critical temperature and cooling it at room temperature under steady None 297. Limiting frictional force is to applied external force. as compared ( equal greater than lesser than none of the above None 298. Law(s) of friction is/are- Frictional force always works in the opposite direction of motion of object. Frictional force is always equal to the force applied for moving the object. Frictional force depends on the nature and position of the surfaces in contact but does not depend on their shape or area. All of the above None 299. Limiting frictional force is reaction between the two surfaces proportional to the normal inversely proportional equal none of the above None 300. Ratio of limiting friction and normal reaction is known as angle of friction coefficient of friction inclined plane none of the above None 301. Coefficient of friction is denoted by R n μ F None 302. Coefficient of friction is _____________ for two elements. constant different proportional none of the above None 303. Value of coefficient of friction is- less than 1 2 3 4 None 304. Angle between normal reaction force and resultant force of limiting friction and normal reaction force is called inclined plane angle of friction coefficient of friction none of the above None 305. Angle of friction is represented by theta y μ none of the above None 306. Frictional force does not depend on which of the following- shape of the surfaces area of the surfaces both (a) and (b) none of the above None 307. The purpose of adequate lubricant in machinery to increase the productivity of the machine to increase the age of the machine in order to ensure that all parts of the machine work smoothly all of the above None 308. Main function of a lubricant is- to prevent heating up of the machinery to cool down the parts of the machine to keep two parts in contact wet to reduce the friction between two parts in contact None 309. Which special flat figure has the centre of gravity located at the intersection of its diagonals? Circle Equilateral triangle Right angled triangle Parallelogram None 310. The point where the entire weight of an object is concentrated is known as - torque equivalent centre of gravity coupling None 311. Value of acceleration due to gravity is- 98.1 m/sec² 98.1 ft/sec² 9.81 m/sec² 9.81 ft/sec² None 312. The centre of gravity of a circle lies on its axis on the radius at the intersection of medians at the centre None 313. The centre of gravity of a cylinder lies- at the intersection of diagonals at the intersection of the medians at a point on the centre axis at 1/4th of height from the base None 314. The centre of gravity of a triangle lies - ( at 1/4th of height from the base at the intersection of diagonals at a point on the centre axis at the intersection of medians None 315. Where will be the centre of gravity of a rectangular solid located? at the intersection of medians at the centre at the intersection of diagonals at a point on the center axis None 316. ) The centre of gravity of a cone lies at the intersection of diagonals 1/4th of height from the base at a point on the center axis at the intersection of medians None 317. Which principle forms the basis of CG? Torque Archimedes Buoyancy Relative density None 318. Which factors are necessary for any object to be in a state of equilibrium? Algebraic sum of all the horizontal components of forces acting on the object should be zero. Algebraic sum of the vertical components of the forces acting on the object should be zero. Algebraic sum of the moments of the forces acting on the object should be zero All of the above None 319. That state of equilibrium in which a body tends to return to its original position after being displaced is known as equilibrium stable equilibrium unstable equilibrium neutral equilibrium None 320. The state of equilibrium in which a body does not return to its original position after being displaced is known as equilibrium stable equilibrium unstable equilibrium neutral equilibrium None 321. The state of equilibrium in which a body does not return to its original position after being displaced but the new position is similar to the previous position is known as- equilibrium stable equilibrium unstable equilibrium neutral equilibrium None 322. None 1 out of 33 Name Phone Time's upTime is Up!
