Hack Saw blades are made up of......
Squirrel-cage induction-motor differs from a slip-ring induction-motor as it has no
The fixed value Carbon Resistors are generally not more than...... Watts
A synchronous motor is started on:
The electric motor generally used in house hold food mixers is
What metals contained in brass alloy?
A capacitor-start, single-phase motor will usually have a P.F. of:
What is the profit amount, if the i - phone cost price is Rs.50000/- and selling price is Rs.70000/-?
Motor used in electric traction is
The specific resistance of a substance depends on
A fuse in a circuit provides protection against.....
An appliance has a resistance of 100 ohms, takes 2 amperes. What is the power consumed by the appliance?
The number of electrical degrees which passes through in one revolution of a 6 pole alternator is:
If a 200 watts lamp is connected across a 250 volt source then what will be the circuit current ?
What is the possible range to measure the size of the wire in a Standard Wire Gauge (SWG)? |
What is the S.I unit of specific resistance?
. As per Ohm's law statement in the circuit, current is directly proportional to........
The speed of a series motor at no-load is
Calculate slip of an induction motor if it has 4 poles, 50Hz, rotor speed is 1400 rpm.
Which type of resistor is used for Arc quenching protection in circuit breakers?
Which is the example for negative temperature coefficient substance?
The principle of operation of an induction motor is based on:
which metal is used in electric lamp filament
What is the unit of strain?
The armature of d.c. generator is laminated to
The back emf of a DC motor depends on the
What is the unit of power?
The 10 pole D.C generator has 960 armature conductors and a flux per pole of 20 mwb running at 600 rpm. Calculate the e.m.f generated when the armature is connected in simplex wave winding?
The RMS value of emf induced per phase in alternator is given as .........
The given Wheatstone bridge is balanced when P= 100 2; Q=1k2 and S = 120 £2. Calculate the value of the unknown resistance.
. The formula to find EMF induced (E) in DC generator is
Calculate the hot resistance value of the lamp 200 watts/250 volts?
What is the power input to an electric heater, that draws 4 amperes at 250 volts supply source?
What is the formula for kinetic energy?
The direction of rotation of a synchronous motor can be reversed by reversing
Which affects the centre of gravity of the object?
A 6 pole, 50 Hz, 3 phase induction motor has a full load speed of 950 R.P.M. At half load, its speed would be
What is the ratio of 4 kg to 800 grams?
The voltage generated by a generator is determined by the equation:
Which material is having negative temperature coefficient? (
What is the radius of a circle whose diameter is 44 cm?
Calculate the value of resistance by colour coding method.
the distance between two adjacent teeth of hack saw blades are called as
What is the centre of gravity of a right circular cone from its base?
What is the centre of gravity of a rectangular body?
Armature cores are commonly made of
Which type of fire extinguisher is used for fire on electrical equipment?
What is the function of a centrifugal switch?
Which law states that the sum of the currents meeting at junction is equal to zero?
In d.c. generators, lap winding is used for
What is the purpose of a lubricant?
What are the two classifications of system of units?
Which type of fire extinguisher must NOT be used for electrical base fire?
The ELCB expansion form is
