WS&C – 1st 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. What are the two classifications of system of units? British and Metric Gravitational and non-gravitationaL Fundamental and derived Metric and International None 2. What are fundamental units? Length, Mass, Volume Length, Mass, Time Length, Mass, Area Length, Pressure, Volume None 3. What denotes letter M in MKS system? Mile Meter Millimeter Micron None 4. How many millimetres are there in 1 inch? 2.54 mm 25.4 mm 24.5 mm 2.45 mm None 5. What is the LCM of 12, 18, 6, 36? 12 18 36 42 None 6. What is the HCF of 18, 42, 24? 2 6 18 24 None 7. What is the product of 0.003 x 0.5? 0.00015 0.0015 0.015 0.15 None 8. What is the length of each part is a copper wire of 225 metre long is cut into 900 equal parts? | 0.23 metre 0.25 metre 0.28 metre : 0.29 metre None 9. What is the square root of 529? 13 23 33 43 None 10. What is the square root of 0.017? 0.001 0.13 0.00001 0.000001 None 11. What is the definition of ratio? Relation of two quantities of the same kind Relation of two quantities of the different kinD Equality between two ratios Inequality between two ratios None 12. What is the ratio of 4 kg to 800 grams? 5 : 1 4 : 8 8 : 4 2 : 4 None 13. What percentage of 80 is 20? 0.8 0.4 0.25 0.2 None 14. How much is 8% of 40 kg? 2.2 kg 3.2 kg 4.2 kg 5.2 kg None 15. Convert 0.456 decimal fraction into percentage? : 45.6% 0.0456 0.456% 0.0456% None 16. What is the x value for x2 + 62 = 102? 4 6 8 10 None 17. What is the square root of decimal number 550.37? 21.26 22.26 22.46 23.46 None 18. What is the value of Ö8 + Ö18 - 2Ö2? 2.24 3.24 4.24 5.24 None 19. What is the side AB if AC = 10 cm and BC = 6 cm? 8 cm 6 cm 5 cm 4 cm None 20. What is the side AB, if BC = 15 cm and AC = 9 cm? 4 cm 8 cm 10 cm 12 cm None 21. What is the length L2, if total length (L) is 2.75 metre and L1 : L2 = 2 : 3? 1.1 metre 1.25 metre 1.65 metre 1.75 metre None 22. How many days a mechanic takes to assemble 64 machines if he assembles 8 machines in 3 days? 20 days 22 days 24 days 26 days None 23. What will be the rpm of smaller gear if a 180 mm dia meshes with 60 mm dia gear and the bigger gear makes 60 rpm? 120 rpm 140 rpm 160 rpm 180 rpm None 24. What is the percentage of copper if the casting weight of copper 42.3 kg and tin weight 2.7 kg? Cu 92% Cu 94% Cu 96% Cu 98% None 25. A motor cycle tyre is sold for Rs 300/- what is the purchase price if 25% profit is added to it Rs 200 Rs 220 Rs 240 Rs 260 None 26. What is the decimal fraction of conversion of 18.5%? 0.185 0.175 0.165 0.195 None 27. Which one is non-metal? Mercury Graphite Brass Iron None 28. Which metal contains iron as a major content? Brass metal Bronze metal Zinc Ferrous metaL None 29. What is the name of the metal which do not contain iron? Ferrous metals Non-ferrous metals Insulating metals Non-Insulating metals None 30. Which one of the following properties is the mechanical properties of metal? Fusibility Ductility Corrosion Structure None 31. Which is brittle metal? Cast iron Steel Mild steel Alloy steel None 32. Which mechanical property of a metal offers resistance to elastic deformation in a cutting tool? Ductility Malleability Hardness Toughness None 33. Which property of material enables to formation of permanent deformation without fracture? Elasticity Plasticity Ductility Brittleness None 34. Which property of metal has its power of returning to its original shape after the applied force is released? Malleability Tenacity Elasticity Plasticity None 35. Which property of a metal possessed by it melts when heat is applied? Conductivity Malleability Fusibility Tenacity None 36. Which alloy used in electric lamp as filament? Cobalt Vanadium Tungsten Silicon None 37. What metals contained in brass alloy? Copper and aluminium Copper and lead Copper and zinc : Copper and tin None 38. Which cast iron cannot be welded? Grey cast iron White cast iron Malleable cast iron Nodular cast iron None 39. Which metal cannot be forged? Alloy steel Mild steel Steel Cast iron None 40. Which metal is widely used for making casting of machinery parts? Grey cast iron White cast iron Malleable cast iron Wrought iron None 41. Which furnace is used to get pig iron from iron ore? Mild steel - Rever battery Electric furnace Blast furnace Cupola None 42. What is the name of furnace to obtained cast iron? Cupola Mild steel - Blast furnace Steel - Rever battery Alloy metal - Electric furnace None 43. What is the other name of low carbon steel? Low alloy steel High alloy steel High speed steel Mild steeL None 44. What is the carbon percentage in medium carbon steel? 0.05% to 0.15% 0.15% to 0.25% 0.25% to 0.5% 0.5% to 1.5% None 45. What is the carbon percentage in low carbon steel? 0.02% to 0.03% 0.15% to 0.25% 0.25% to 0.50% 0.50% to 1.50% None 46. What is the carbon percentage in high carbon steel? 0.02% to 0.03% 0.15% to 0.25% 0.25% to 0.50% 0.50% to 1.50% None 47. What is the ore of aluminium? Hematite Mallatite Bauxite Lemonite None 48. Which property of a metal enables it by which it can be drawn out into wires under tension without rupture? Ductility Malleability Hardness Brittleness None 49. Which among the following is an insulator? Copper Aluminium Silver Mica None 50. Which rubber is used as insulator for power cables and control wires? Butyl Hypalone Silicon Nitrite butadiene None 51. Which alloy steel is used to make permanent magnets? Silicon steel Manganese steeL Vanadium steeL Cobalt steeL None 52. Which insulator is used in over head lines? Mica Rubber P.V.C Porcelain None 53. Which insulating material is used for making switches? Porcelain PVC Bakelite Ebonite None 54. What is the name of the property of an insulation that should brake down or puncture on application of high voltage? Di-electric strength Specific resistance Mechanical strenth Non absorption None 55. Which alloy steel is using for making precious instrument? Silicon steel Manganese steel Invar steel Vanadium None 56. Which steel is used for making files and cold chisel? Low carbon steel Midium carbon steel High carbon steel Stainless steel None 57. What is termed as the quantity of matter contained in a body? Density Volume Mass Specific gravity None 58. What is the force with which a body is attracted by the earth towards its centre? Mass Weight Volume Density None 59. What is called mass per unit volume of a substances? Mass Weight Density Volume None 60. What is called the ratio between the density of a substances density of water at 4°C? Density Specific gravity Mass Weight None 61. What is the density of aluminium? 2.7 g/cm3 3.7 g/cm3 4.7 g/cm3 5.7 g/cm3 None 62. Wha is the mass if the density of a body is 7.6 g/cm3 and its volume is 25 cm3? 190 grams 200 grams 210 grams 220 grams None 63. What is the specific gravity of the solid, if density of the solid is 19.5 g/cm3? 18.0 18.5 19.0 19.5 None 64. What is the density (r) in g/cm3 of an iron cube, if it weighs (W) 4.8 kg and volume (V) is 640 cm3? 6.6 g/cm3 6.9 g/cm3 7.2 g/cm3 7.5 g/cm3 None 65. What is the volume (V) of mercury in cm3, if mass (m) of mercury is 1 kg and density (r) is 13.6 g/cm3? 73.53 cm3 73.43 cm3 73.33 cm3 73.23 cm3 None 66. What is the mass in gram, if a force of 15 dyres acting on a mass m producing an acceleration of 2.5 cm/sec2? 9 grams 8grams 7 grams 6 grams None 67. What is the specific gravity of the metal, if the piece of metal weighs 150 grams in air and 125 grams in water? 6 10 15 25 None 68. What is the volume of mercury in cm3, if the mass (m) of mercury is 136 grams (g) and density (r) of mercury is 13.6 g/cm3? 136 cm3 13.6 cm3 10.6 cm3 10.0 cm3 None 69. What is the block weighs (W) in kg, if volume (V) is 320 cm3 and density 8.9 g/cm3? 2.948 kg 2.848 kg 2.648 kg 2.448 kg None 70. What is the specific gravity of the metal, if the weighs 6.5 kgf in air and 3.5 kgf in water? 6.166 3.166 2.166 1.166 None 71. What is the weight force of a car has a mass of 800 kg?(Take g = 9.81m/sec) 7848 Newton 7748 Newton 7847 Newton 7487 Newton None 72. What is the formula for speed? Distance covered/Time Change in velocity/Time Distance in definite direction /Time Change in momentum/Time None 73. What is the unit of speed? Metre/second Metre/second2 Metre/minute Metre/hour None 74. What is the formula for velocity? Distance covered/Time Displacement/Time Change in velocity/Time Change of momentum/Time None 75. What is the unit for velocity? Metre/second Metre/second2 Metre/minute Metre/hour None 76. What is called if a body posses only magnitude or size alone? Speed Velocity Vector quantity Scalar quantity None 77. What is called if a body posses both magnitude and direction of velocity? Speed Velocity Vector quantity Scalar quantity None 78. What is the rate of change of displacement of a body? Body at rest Body at motion Speed Velocity None 79. What is velocity of a body travels a distance of 168 metres in a line in 21 seconds? 6 m/sec 8 m/sec 10 m/sec 12 m/sec None 80. What is the speed of a train of 80 metre long train passes a railway station platform of 120 metres length in 20 seconds? 30 km/hour 32 km/hour 34 km/hour 36 km/hour None 81. What is the unit of acceleration of an object? Metre/second Metre/second2 Metre/minutes Metre/minutes2 None 82. What is the acceleration of a car if the speed of the car has increased from 25 km per hour to 40 km per hour in one minute? 0.059 m/sec2 0.59 m/sec2 0.069 m/sec2 0.69 m/sec2 None 83. What is the retardation of a car moving with a velocity of 50 km/hr is brought to rest in 45 seconds? 0.40 m/sec2 0.30 m/sec2 0.20 m/sec2 0.10 m/sec2 None 84. What is the acceleration of an aeroplane taking off from landing field has to run 700 metres if it leaves the ground in 10 seconds from the start? 8 metre/sec2 10 metre/sec2 12 metre/sec2 14 metre/sec2 None 85. : What maximum height a stone will reach if it is thrown upwords with a velocity of 20m/sec?(g = 10m/sec2 10m 20m 30m 40m None 86. What is the work done in unit time? Energy Power Force Acceleration None 87. What is the capacity of a body to do work is called? Energy Power Acceleration Force None 88. What is the ratio of power output to power input? Work Energy Efficiency Acceleration None 89. What is called if a force of 1Newton acts on a body and moves it through a distance of 1 metre? 1 Joule 10 Joules 1 dyne 10 dynes None 90. How many ergs for 1 Joule? 103 ergs 105 ergs 107 ergs 109 ergs None 91. How many newtons for 1 kilogram? 981 Newtons 98.1 Newtons 9.81 Newtons 0.981 Newtons None 92. How many watts for 1 horse power in metric system? 725.5 watts 735.5 watts 745.5 watts 755.5 watts None 93. How many watts for 1 horse power in British system? 726 watts 736 watts 746 watts 756 watts None 94. What is the equivalent unit for 1horse power in metric system? 75 kg.m/sec 76 kg.m/sec 77 kg.m/sec 78 kg.m/sec None 95. What is the formula for potential energy? mgh joule mgh2 joule 1/2 mgh joule 2/3 mgh joule None 96. What is the formula for kinetic energy? 1/2 mv joule 1/2 mv2 joule 2/3 mv2 joule 2/3 mv joule None 97. How much work done in one hour, if a pump can raise 100 liters of water through a height of 200 meters in one minutes? 12 x 104 kg meter 12 x 105 kg meter 12 x 106 kg meter 12 x 107 kg meter None 98. What is the work done, if a force of 250 newtons acted upon a body and the body has been moved through a distance of 15 metres? 3720 Joules 3730 Joules 3740 Joules 3750 Joules None 99. What is the potential energy, if a body of mass 250 kg is at a height of 30 metre? 72.57 KJ 73.57 KJ 74.57 KJ 75.57 KJ None 100. What is the potential energy in a body of mass 10 kg kept on the top of a pole 20 metres height? 1942 Joules 1952 Joules 1962 Joules 1972 Joules None 101. What is the work done in joules if a load of 15.5 kg is lifted through a height of 4.4 metres? 639 Joules 649 Joules 659 Joules 669 Joules None 102. What is the kinetic energy of a bullet of mass 5gm travels with a speed of 500 m/sec? 620 Joules 625 Joules 630 Joules 635 Joules None 103. Which refers the temperature? : It is a form of energy It tells the state of heat It tells specifie heat of substance : It is measured by calorie meter None 104. What is the S.I unit of heaT? Calorie Joule Centigrade heat unit British thermal unit None 105. Which instrument is used to measure heat? Calorie meter Thermometer Pyrometer Barometer None 106. What is the quantity of heat required to raise the temperature of 1 gram of water through 1°C is called? Specific heat Colorie British thermal unit Centigrade heat unit None 107. What is the value for specific heat of water? 4 3 2 1 None 108. Which type heat is the heat absorbed or given off by a substance without changing its physical state? Latent heat Sensible heat Specific heat Latent heat of steam None 109. What is the boiling point of water in fahrenheit scale? 212°F 180°F 112°F 100°F None 110. What is the freezing point of water in kelvin scale (K)? 373°K 313°K 303°K 273°K None 111. Convert 45°C (Centigrade) into °F (Fahrenheit). 110°F 111°F 112°F 113°F None 112. At what temperature will Fahrenheit and centigrade thermometers give the same reading? 38°C 39°C 40°C 41°C None 113. Convert - 273°C (Centigrade) into kelvin scale? 0°K 1°K 2°K 3°K None 114. What is the value in degree centigrade for 20°F? -6.37°C -6.47°C 6.57°C -6.67°C None 115. What is the maximum temperature that can be measured by mercury thermometer? 400°C 300° 200°C 100°C None 116. What is the name of temperature measuring instrument? Vapour pressure thermometer Bimetalic thermometer Radiation pyrometer Thermoelectric pyrometer None 117. Which instrument is used to measure temperatures of red hot metals up to 3000°C? | Radiation pyrometer Thermoelectric pyrometer Bimetal thermometer Alcohol thermometer None 118. Which type of heat transmission takes place through physical contact? Conduction Convection Radiation Reflection None 119. Which kind of heat transmission takes places by up-ward flow? Conduction Convection Radiation Reflection None 120. Which one is the radiation method of heat transmission? An iron rod is heated with one of its end and heat transmitted to other end Cold water goes to the bottom from top while on heating the wate On heating gases, heat transmitted to surroundings The heat from sun travels through the space None 121. What is called if the length of the solid expands when heated? Linear expansion Superficial expansion Cubical expansion Area expansion None 122. What is the change in length per unit original length per degree rise in temperature is called? Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion None 123. What is the unit of co-efficient of linear expansion? Number /°C Number /°C Number /°C / mm length Number /°C / cm length None 124. None 125. What is term used for 2 x linear expansion? Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion None 126. What is term called for 3 x linear expansion? Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion None 127. None 128. What is the co-efficient of linear expansion of a rod if it is found to be 100 m long at 20°C and 100.14 m long at 100°C? : 1.75 x 10-4 / °C 1.75 x 10-5 / °C 1.75 x 10-6 / °C 1.75 x 10-7 / °C None 129. What is called for the amount of heat required to raise the temperature of unit mass of a substance through 1°C? Sensible heat Latent heat Specific heat Mixing of heat None 130. How much quantity of heat is required?m = 120 litres t1 = 20°C t2 = 85°C S = 4.2 Q = _____ KJ 32750 KJ 32760 KJ 32770 KJ 32780 KJ None 131. Calculate the amount of heat required to raise the temperature of 85.5 gm of sand from 20°C to 35°C specific heat of sand = 0.1 128.25 Joules 125.28 Joules 128.26 Joules 126.28 JouleS None 132. What is the specific heat of the material if we require 510 calories to raise the temperature of 170 gm of material from 50°C to 80°C? 0.1 0.01 1.1 1.11 None 133. How much quantity of heat is required to raise the temperature of 300 grams of copper (sp.heat 0.092 cal/gram) from 25°C to 75°C in Kcal? 138 Kca 1.38 Kcal 207 Kcal 2.07 Kcal None 134. How much heat is absorbed by a copper ingot weighing 400 Kg is heated from 40°C to 72°C for the purpose of forging? (sp.heat of copper is 0.09) 1521 Kcal 1251 Kca 1152 Kcal 1215 KcaL None 135. What is called for the materials that restricts heat flow by radiation, conduction and convection? Conductors Insulators Ferrous Non-ferrous None 136. Which one is heat insulator? Thermocole Copper Brass Aluminium None 137. Which one has the highest thermal conductivity? Solid ice Melting icE Water Steam None 138. : Which one of the following is not a property of heat insulating material? Low conductivitY Resistance to fire Less moisture absorption Ductility None 139. Which insulating material is most widely used in refrigerators? Thermocole Polyurethane Glass wooL Cork sheeT None 140. Which one is a poor heat insulator? Glass Cork Rubber : Saw dust None 141. What is known for the temperature at which any solid melts into liquid? Boiling poinT Melting point Latent heat of fusion Latent heat of vaporisation None 142. : What is the melting point of aluminium? 660°C 680°C 620°C None 143. What is the boiling point of aluminium? 1897°C 2519°C 2469°C 660°C None 144. What is the boiling point of water? 0°C 32°C 100°C 212°C None 145. What is the melting point of mercury? 357°C 209°C -7.1°C -38.72°C None 146. What is the boiling point of mercury? 357°C 280°C 759°C 767°C None 147. What is the ratio of force (or) thrust per unit area? Work Power Pressure Energy None 148. What is the equivalent pascal value for 1 bar? 105 pascal 107 pascal 103 pascal 109 pascal None 149. What is the SI unit of pressure? Joule Pascal Bar Newton None 150. : Which machine converts mechanical energy into electrical energy? Battery Generator Heater Iron box None 151. Which is the unit of current? Ampere Volt Ohm Watt None 152. Which is the unit of resistance? Ampere Volt Ohm Watt None 153. What is the flow of electrons in any conductor? | Voltage Current Resistance Power None 154. Which property of a substance is opposing the flow of electric current? Current Voltage Resistance EMF None 155. Which is very good conductor? Copper Cast iron Wrought iron Steel None 156. None 157. Which is mineral insulator? Glass Quartz Mica Porcelain None 158. What is the total resistance if three resistances of 3 ohms, 9 ohms and 5 ohms are connected in series? 11 ohms 7 ohm 17 ohms 1/17 ohms None 159. Which is same in series connection of resistors in a circuit? Current Voltage Resistance Power None 160. Which law states that at constant termperature the current passing through a closed circuit is directly proportional to the potential difference and inversely proportional to the resistance? Ohm´s law Lenz´s law Newton´s law Hooke´s law None 161. What is the resistance? I = 11.5 Amps V = 380 Volts R = _______Ohms 13 ohms 23 ohms 33 ohm 43 ohms None 162. What is the current? R = 50 Ohms 220 Volts I =______Amps 4.1 Amps 4.2 Amps 4.3 Amps 4.4 Amps None 163. : What is the voltage? R = 250 Ohms I = 0.44 Amps V = _____Volts 100 Volts 105 Volts 108 Volts 110 Volts None 164. Which statement is correct according to ohm´s law? µ 1/V µ R µ V/R µ R/V None 165. What is the filament resistance if a 6 volt bulb draws a current of 0.5 Amps? 12 W 10 W 3 W 1.2 W None 166. None 167. How much watt second in 1 watt hour? 1000 watt sec 2000 watt sec 3600 watt sec 4000 watt sec None 168. What is the power if an emf of one volt causes a current flow of 1ampere? 1 watt 1 kilowatt 1 HP 1 Kilowatt hour None 169. Which is equal to electric power? R2I watts I2R watts None 170. How much power does it consumes if an electric heater draws a current of 10 amps at 200 volts? 2000 watts 2010 watts 2020 watts 2030 watts None 171. What is the resistance of an electric iron if the rating of electric iron is 220 V and 500 watts? 94.8 ohms 95.8 ohms 96.8 ohms 97.8 ohms None 172. What is the voltage of the immersion heater? P = 500 watts I = 2.27 Amps V = ______Volts 200.3 volts 210.3 volts 220.3 volts 230.3 volts None 173. What is the unit of intensity of magnetic field? | wb/m m/wb Hertz Coloumb None 174. Which law states about electromagnetic induction? Ohm´s law Hooke´s law Lenz´s law Faraday´s law None 175. What is the formual for induced emf? B2L sinq volts BL sinq volts BLV sinq volts B2V sinq volts None 176. What does EMF stands for? Electronic Magnetic Force Electronic Magnetic Force : Electro Magnetic Force Electromated Force None 177. Which is the example for statically induced emf? | Generator Motor Transformer Refrigerator None 178. Which is the example for dynamicallly induced Emf? Motor Generator Car Motor bike None 179. Which is the unit electrical power? Volts Ohms Watts Ampere None 180. What is the current Flow in the bulb? P = 550 watts R = 22 Ohms I = ______Amps | 2 Amps 3 Amps 4 Amps 5 Amps None 181. What is the rated power if an adjustable resistor bears the following label 1.5 k ohms/ 0.08A? 9.2 watts : 9.4 watts 9.6 watts 9.8 watts None 182. None 183. What is the area of a square whose side is 18 cm? 26 cm2 36 cm2 72 cm2 324 cm2 None 184. What is the diagonal of a square plate whose side is 28 cm? 39.29 cm 39.39 cm 39.49 cm 39.59 cm None 185. What is the side of a square whose area is 625 mm2? 15 mm 20 mm 25 mm 30 mm None 186. What is the perimeter of a rectangle whose length and breadth are 20 cm and 18 cm? 56 cm 66 cm 76 mm 86 mm None 187. What is the area of a rectangle, whose length and breadth are 10cm and 8cm respectively? 75 cm2 80 cm2 85 cm2 None 188. What is the area of a right angled triangle having a base 10 cm and height 5 cm? 20 sq.cm 25 sq.cm 30 sq.cm 35 sq.cm None 189. What is the primeter of scalene. Triangle having sides of 40mm, 20mm and 28mm? 68 mm 78 mm 88 mm 98 mm None 190. What is the area of an equilateral triangle of side 450 mm? 856.82 cm2 866.82 cm2 876.82 cm2 886.82 cm2 None 191. What is the area of a circle of diameter 50 cm? 1932.5 cm2 1942.5 cm2 | 1952.5 cm2 1962.5 cm2 None 192. What is the area of a (A) semicircle whose dia is 20 cm (d)? | 147.1 cm2 157.1 cm2 167.1 cm2 177.1 cm2 None 193. What is the area of a sector of a circle of radius 5 cm and its angle is 96°? 20.39 cm2 20.93 cm2 20.89 cm2 None 194. What is the formula for area and perimeter of a hexagon? | 3 x Ö3/4 a2 unit2 3a unit | 4 x Ö3/4 a2 unit2 4a unit 5 x Ö3/4 a2 unit2 5a uni 6 x Ö3/4 a2 unit2 6a uni None 195. What is the area of an ellipse if the major and minor axes are 5 cm and 3 cm respectively? 27 cm2 37 cm2 47 cm2 57 cm2 None 196. Find the total surface area of cube whose side is 25 cm 3740 cm2 3745 cm2 3750 cm2 3755 cm2 None 197. Find the total surface area of a cast iron bar whose length, width and height are 20m, 15m and 12m 1340 m2 1440 m2 1540 m2 1640 m2 None 198. What is the formula for total surface area of a cylinder? | 2Ï€ r (h + r) unit2 Ï€ r (h + r) unit2 Ï€ rh unit2 2Ï€ rh unit2 None 199. What is the volume of a rectangular tank of 30 m length, 20m width and 10m height? 5900 m3 6000 m3 6100 m3 6200 m3 None 200. What is volume of the cylinder whose radius is 7 cm and height 12 cm? | 1842 c.c 1844 c.c 1846 c.c 1848 c.c None 201. What is the volume of sphere of radius 7 cm? | 1436 cm3 1463 cm3 1346 cm3 1636 cm3 None 202. What is the formula for finding volume of a hollow cylinder having outer radius ´R´ inner radius ´r´ and height ´h´? Ï€ (R2 - r2) h unit3 Ï€/3 (R2 - r2) h unit3 2/3 Ï€(R2 - r2) h unit3 4/3 Ï€ (R2 - r2)h unit3 None 203. What is the capacity of a conical tank of radius 2 m and height 5m? 11 m3 21 m3 31 m3 41 m3 None 204. How many liters of water a cylindrical tank of radius 75 cm and height 100 cm can hold? 1766.25 liters 1767.25 liter 1768.25 liters 1769.25 liters None 205. What is the total surface area of a cylinder having radius 2 metres and height 5 metres? | 86 sq.metre 88 sq.metre 90 sq.metre 92 sq.metre None 206. Find the curved surface area of a cylinder 10 cm dia and 20 cm height? 620 cm2 628 cm2 630 cm2 638 cm2 None 207. What is the name of the object? Triangular prism Frustum of a pyramid Frustum of a cone Hexagonal prism None 208. What is the ratio between the distance moved by the effort to the distance moved by the load? Mechanical advantage Velocity ratio Efficiency Fulcrum None 209. What is the mechanical advantage, if a load of 1000 kg is lifted by a simple machine and effort applied is 250 kg? 6 8 3 4 None 210. What is the velocity ratio of a wheel and axle if the radii of wheel and axle are 375 mm and 75 mm respectively? 3 4 5 6 None 211. What is the velocity ratio of a simple machine of a mass 120 kg is lifted to a height of 5 metres by a force of 60 kg moving 15 metre. Calculate velocity ratio? 1 2 3 4 None 212. What is the efficiency of a simple screw jack having velocity ratio is 314.2 and mechanical advantage is 220? 0.6 0.65 0.7 0.75 None 213. How much load is lifted if an effort of 25 kg is applied to a simple machine having velocity ratio of 4 and efficiency 75%? 65 kg 70 kg 75 kg 80 kg None 214. What is the name of fixed or supporting point of a lever? Mechanical advantage Fulcrum Effort Load None 215. What effort required to lift a load of 150 kg in a machine is 75%? wheel and axle, if the velocity ratio is 2.5 and the efficiency of the 70 kg 80 kg 90 kg 100 kg None 216. What is the distance of the load from the fulcrum called? Effort arm Load arm Power arm Effort None 217. Which is example for first order lever? A wheel barrow A pair of scissors Fire tongs Lime squeezer None 218. Which is example for second order lever? Common balance A pair of scissors Bottle opener Human forearm | None 219. Which is example for third order lever? Common balance Forceps A pair of scissors Lime squeezer None 220. Which type of levers is bell cranked lever? Curved lever 1st order lever 2nd order lever 3rd order lever None 221. Which order lever is claw hammer? 1st order lever 2nd order lever : 3rd order lever Curved lever None 222. Which is equal to sinq? Opposite Side/Hypotenuse Hypotenuse/Opposite side Adjacent Side/Hypotenuse Hypotenuse/Adjacent side None 223. What is equal to cosq? Hypotenuse/Adjacent Side Adjacent Side/Hypotenuse Opposite side/Hypotenuse Hypotenuse/Opposite Side None 224. What is equal to tanq? Opposite Side/Hypotenuse Adjacent Side/Hypotenuse Opposite Side/Adjacent Side Adjacent side/Opposite side None 225. What is the value of tanq if sinq = 4/5 ? 4/5 5/3 3/4 4/3 None 226. What is the value of q if sinq = Ö3/2 ? 30° 45 60 90° None 227. What is 1 + cot2q? sec2q cosec2q cot2q tan2q None 228. What is the height of the wall where the ladder touches the wall if the ladder is 2.5 m long makes an angle of 60° with the ground? 4.13 m 4.23 m 2.165 m 4.43 m None 229. What is the height of AC? 1.732 m 17.32 m 173.2 m 1732 m None 230. What is the height of the building if a ladder at 45° touches the building placed 16 m from the base of the building? 15m 16m 1`7m 18m None 231. What is the angle of q? 30° 45° 60° 90° None 232. What is the term for the object seen higher than eye level? Angle of inclination Angle of friction Angle of elevation Angle of depression None 233. 1 Foot = 12 inch 3 feet 220 yards none of the above None 234. 1 yard- 12 inch 3 feet 220 inch none of the above None 235. 1 Furlong- 1760 yards 220 yards 880 yards none of the above None 236. 1 Mile 220 yards 880 yards 1760 yards none of the above None 237. I Mile= 4 furlongs 8 furlongs 9 furlongs 880 yards None 238. 1 Pound 8 ounces 16 ounces 12 ounces 20 ounces None 239. 1 gram= 1000 miligrams 10000 miligrams 10 miligrams none of the above None 240. 1 kilometre. 1000 metres 10000 metres 1000 grams 10 meters None 241. 1 kilowatt 100 watts 100 watt hours 1000 watts none of the above None 242. 10 mililiters= I deciliters 1 centiliters I liter none of the above None 243. 4.545 liters= 1 gallon yes no None 244. 1 yard 1.914 meters 0.914 meters 1/8 furlongs 2.914 meters None 245. 1 inch = 2.54 cm ) 25.4 cm 1 / 36 yard none of the above None 246. 1 cm=0.394 inch yes no None 247. 1 meter =1.094 yards yes no None 248. 2.2 pounds 2 1 3 0.5 None 249. 6.25 sq. cm = 1 sq. meter 1 sq. inch 1 inch none of the above None 250. 1 quintal= 1000 kilograms yes no None 251. 1 quintal= 100 kilograms yes no None 252. 1 metric tonne 1000 kg 200 kg 100 kg none None 253. 1 sq. foot is = ________than foot. foot more less same None 254. 1 metric tonne is = ..................than one quintal. big small None 255. 1 gallon= 4.55 litre yes no None 256. 1 kg iron, is =.................. than the weight of cotton. less more same None 257. 1 metric tonne is =........................ than tonne weight more less None 258. 120° C.=.................. °F 280° F 40° F 80° F 248° F None 259. 1 pound = 450 kg 4.53 kg 0.453 kg 0.543 kg. None 260. Largest four digit No. which is divisible by 38 is: 9999 9994 9993 9992 None 261. If a number is multiple of 2, it is called: Odd number Even number Natural number Whole number None 262. Which one is divisible by 3? 10 22 95 60 None 263. Which one is prime No.? 16 22 39 47 None 264. HCF of 66 and 330 is: 66 330 6 3 None 265. If product of two digits is 192 and HCF is 4, find their L.C.M. 48 40 24 42 None 266. Write 3 divide 5 in fraction form: 5/3 3/5 12/15 1/2 None 267. Write one point zero-zero eight in numerical form 0.008 1.008 1.08 1.8 None 268. 136.48 +15.642 + 67.59 219.640 219.712 219.702 219.604 None 269. 15 m 5 cm=..............m. 15.05 15.5 155 1.55 None 270. If the cost of 5 litre of petrol is Rs. 90 then find cost of 8 litre of petrol. 140 142 144 146 None 271. 992 m 80 cm divided by 4 = 240 m 20 cm 242 m 10 cm 200 m 20 cm 248 m 20 cm None 272. 5.15 p.m. in 24 hour clock time is: 0515 hours 1715 hours 0715 hours 1205 hours None 273. 100 thousand-................ lakh. 10 1 100 None of these None 274. Which of the following number is 20 more than 200 ? 180 220 240 190 None 275. The continued product of 54 x 11 x 7 = 594 4158 4000 5948 None 276. None 277. None 278. 30 40 5 100 None 279. 60 406 400 50 None 280. 45 8 1/2 10 None 281. 10 15 2 1 None 282. 20 1/3 1/2 4 None 283. 1/3 1/6 1/4 1/7 None 284. 4 7/10 1/4 16 None 285. 3:13=15:65 yes no None 286. If 4:5 = 16: x then x = 20 25 80 30 None 287. If 5:8 :: x: 16 then x= 20 25 10 40 None 288. If 30: x:: x : 30 then x=. 20 30 40 50 None 289. Ifx:5 :: 8:4 then x= 40 80 100 10 None 290. rs. 3 and 60 paise=5:2 yes no None 291. If 20 men complete a work in a 5 days then in how many days 1 man will complete the work? 2 days 100 days 60 days 80 days None 292. In the above question if 50 men engage to complete the work, then they will compete the work in........... 2 days 100 days 60 days 80 days None 293. 24 men complete a work in 90 days working 10 hrs. per day. In how many days the work will be completed if men are 45 and working hours are 8 per day? 10 days 20 days 30 days 40 days None 294. A solder is made of 35% tin and 65% lead. In 28 kg solder find out the separate weights of both metals. 9.8, 18.2 kg. 7.8, 20.2 12.8, 15.2 4.5, 23.5 None 295. . A gun metal is made of 22 parts copper and 0.5 part zinc and 2.5 parts lin Find the % of each metal, copper 88%, tin 10% zinc 2% copper 80%, tin 12%, zinc 8% copper 30%, tin 40%, zinc 30% all the above. None 296. Matter does not passes: solid state liquid state shape state gaseous state None 297. Gas can change its volume yes no None 298. In a glass if ice is heated then it will take......shape steam water vapour None 299. On heating metals, will take.......... shape liquid steam gaseous None 300. On heating porcelain will come in...... water steam will not melt None 301. Air has weight yes no None 302. To which article we feel, occupies space and has weight, it is called weight matter solid liquid None 303. An empty ballon will be..... than air filled. light ) heavy no difference None 304. An empty tin will be ............. than an evacuated tin heavy light no difference None 305. Which material is more brittle? brass cast iron None 306. Which material is more brittle? aluminium gun metal None 307. Which material is more brittle? brass aluminium None 308. Give in Serial from more brittle to less brittle material. cast iron gun metal brass None 309. Which material is more ductile ? brass copper aluminium cast iron None 310. Which metal is most ductile ? ) copper aluminium mild steel gun metal None 311. Tempering metal avoid brittleness. yes no None 312. Which way of the following avoid rusting? tinning spraying electroplating animal painting all the above. None 313. Iron is used for: tours building machinery all of these None 314. Pure iron is used in workshop yes no None 315. It is easy to machine the pure iron and we get good finishing yes no None 316. Cast iron and wrought iron can be made from pure iron. yes no None 317. To purify the pig iron, again it is to be put in furnace called. blast furnace cupola furnace ordinary furnace None 318. Two of the types of cast iron are: gray cast iron white cast iron yes None 319. The slag in the blast furnace is heavier than iron which settles dow bottom. ) yes no None 320. Cast iron is not used in Engine bed bearing housing base of machine ball bearing None 321. Wrought iron is the purest form of iron. yes no None 322. Wrought iron is used to manufacture pulleys and it can take he loads yes no None 323. High speed steel is used for making: motor covers pulley machine bed cutting tool None 324. mass/volume relative density Density None 325. Density of substance/Density of water relative density Density None 326. Density of water 100 1000 10 1 None 327. Unit of relative density is foot pound gram/em foot cube none None 328. Unit of density gram/cm³ pound none kg/cm None 329. Relative density shows that the density of substance is heavier or lighter density of water yes no None 330. Gravity of substance= Density of water Density of substance yes no None 331. Density of substance = Water density x Relative density of substance yes no None 332. Relative density of substance = Mass of substance/Same Volume x Volume of water yes no None 333. To know the weight of the substance. Volume of substance x density. Mass of substance x density. Weight of substance x density None of the above None 334. To know the relative density of a soluble substance Archimedes' can be applied. yes no None 335. A body is drowned in water fully or partially in a liquid, then according to Archimedes' principle, the removed liquid by it is............... than its weight less increased same None 336. Unit of relative density gram meter foot none None 337. Weight of silver piece in air is 25 grams, in alcohol it is 22.4 gram and in water it is 22 gram. Find the relative density of silver 0.96 1.96 8 0.86 None 338. We can find out the cavity of silver ornament if we know its density ) relative density None 339. A silver ornament is hollow. Its weight is 228.75 gram and it can displace 300 cc of water. If the S.G. is 10.5, find the volume of cavity 2.5 CC 3 CC 27.5 CC None 340. Relative density of water is 1 CC 100 CC 1000 CC 10000 CC None 341. Hydrometer is used. to find out the relative density of solid to find out the relative density of liquid to find out the gravity of battery all of the above None 342. Hydrometer works on the law of floatation yes no None 343. Nicholson hydrometer is used to find out the relative density of solids ) yes no None 344. Which meter is the form of Hydrometer ? Lactometer Sachari meter Nicholson's hydrometer All the above None 345. According to law of floating which substance will float: if the gravity of substance is greater than liquid if the gravity of substance is equal to the gravity of liquid if the gravity of substance is less than the gravity of liquid none of the above. None 346. Floating law is same as Archimedes' law yes no. None 347. Work= Force x Distance yes no None 348. M.K.S. unit of work is: erg foot poundal joule none of the above None 349. C.GS. unit of work is erg joule pound none of the above None 350. I foot pound 32 foot poundal yes no None 351. Kilogram metre is the unit of work yes no None 352. Rate of doing work is called Energy. yes no None 353. Capacity of doing work is called Energy. yes no None 354. Rate of doing work is called power. yes no None 355. Unit to measure the power is Joule. yes no None 356. Unit to measure the energy is called Joule yes no None 357. Unit to measure the power is called Joule/sec. yes no None 358. Unit to measure the electric power is called yes no None 359. . Unit of electric energy is watt hr. yes no None 360. Energy meter measures electricity in kWh ) yesv no None 361. Energy meter measures electricity in W/sec. yes no None 362. 1 H.P.= 1000 W 746 W 373 W none None 363. Work= Water weight x Distance Joules. yes no None 364. In a 20 meter deep well the water is 770 m³ by volume. Calculate done to draw out the water. 770000 × 980 × 10 Joule yes no None 365. One tonne= 22500 pounds yes no None 366. Heat is not the form of temperature. yes no None 367. Temperature is measured by thermometer. yes no None 368. After putting one hand in hot water and other in cold water, both the han are put in ordinary water, then both hands will feel same heat hot water hand will feel cold and cold water hand will not feel heat hands will be too cold to hold. cold water hand feels cold and hot water hand will feel hot None 369. Correct temperature can be felt with touching hand to the hot body yes no None 370. Unit of heat is degree property thermometer calorie None 371. Unit of temperature is...... degree calorie thermometer different unit None 372. Heat is measured by degree heat thermometer calorie meter None 373. Temperature is measured by degree calorie thermometer different unit None 374. By heating some substance......increases degree calorie thermometer ) heat None 375. Two substances can have same temperature even their heat is separate calorie different unit calorie meter degree None 376. Also B.Th.U, is the unit of heat: yes no None 377. I lb=540 gram yes no None 378. Source of heat is: sun combustion friction all None 379. We can produce heat by electricity. yes no None 380. Heat cannot be produced with atomic energy yes no None 381. Liquid in thermometer is water petrol mobile oil mercury None 382. Melting point of ice is 100° C. yes no None 383. Fahrenheit scale is the unit of temperature which is measured by thermometer yes no None 384. Centigrade scale is used on thermometer only. yes no None 385. Reaumer scale is not used to measure temperature. yes no None 386. Is 50°C=90°F yes no None 387. Is 50°C= 122°F yes no None 388. To convert 122°F into centigrade, first step is to subtract 32 from then use 90°F formula yes no None 389. If the reading on centigrade scale is 89°C, the reading on F° scale will be : 100°F 120°F 192.2°F All the above None 390. When a solid is heated, it melts yes no None 391. When a liquid is heated it becomes solid. yes no None 392. When a solid is heated it also increases in volume. yes no None 393. When liquid is heated it will convert to gas. yes no None 394. Specific heat of water is: 100 1000 1 50 None 395. Heat given by a hot substance = Heat taken by the cold substance yes no None 396. Area is measured in cubic meter: yes no None 397. Perimeter is measured in sq. m. yes no None 398. Length is measured in meter yes no None 399. Depth is measured in sq. m yes no None 400. Height is measured in meter. yes no None 401. yes no None 402. Volume of the iron in pipe or a hollow cylinder. yes no None 403. A cone is a solid whose base is circle and remaining all sides end at a point. yes no None 404. yes no None 405. yes no None 406. yes no None 407. Pyramid is also a cone. yes no None 408. A cube has total area 1350 sq. cm. Its volume is 3375 cm³. yes ) no None 409. A cube has volume of 13824 cm³. Its area will be 846 sq. cm. yes no None 410. Measurement of a tank is 10 m x 5 m × 4 m. With same measureme another tank will have a height of 8 m, whose base side is 6m. yes no None 1 out of 41 Name Phone Time's upTime is Up!
