Explore topic-wise MCQs in Electrical Engineering Questions.

For improving the soil condition and efficiency of earthing system, the pit area around the G.I. pipe is filled with

The efficiency of the transformer will be maximum when

In Daniel cell,

3 - point starter is used to start the

In HRC fuses, the space within the body surrounding the element is usually filled with

When windings of 3 - phase induction motor is rotated in a magnetic field, then the emf induced in each phase are of

The springs should be

In any network of wires carrying currents, the algebraic sum of all currents meeting at a point is equal to

Three - phase induction motor is more suitable than single - phase because

Which among the following is true about ohm’s law?

Specific resistance of a material is

In half wave rectifiers, diode conducts during

Electrical appliances which works on the electromagnetic principle is / are

Permanent magnet are manufactured by

The materials with permeability less than unity are called

The amplitude or peak value or maximum value of an alternating voltage is given by the coefficient of the

The magnetic materials which are strongly attracted by the magnet is

In a 3 - phase star connected balanced induction motor, the line voltage is equal to the

Necessity of earthing is to

Commutator motors have

The most effective earth plate is

In a star connected system, the current flowing through the line is

The number of instantaneous values between zero and the peak value is

In case of a synchronous generator, armature winding and field winding are

Peak to peak value of a sine wave is

Laminations or stampings are used to reduce the eddy current losses. The direction of laminations should be such that

In Fleming’s right hand rule, the direction of the induced emf in the conductor is given by

If the voltage increases from zero to peak value and decreases back to zero during one alteration, then the average value must be

The unit of magnetic flux is

Wattmeter is a / an

Tangent galvanometer can be used to measure

Yoke in a dc machine serves the function of

In a self excited generator, if the series field opposes the shunt field, then the generator is

The undue deterioration in wiring due to the action of dampness, fumes, weather etc is

In gravity control, at the zero position of the pointer the controlling torque is

According to the couloumb’s second law, the force between two magnetic poles placed in a medium is

The magnetic effect is used in

Alternating voltage can be generated by

Root mean square value of current is equal to

The ratio of maximum value to effective value of an alternating quantity is called

The two alternating quantities could be added by constructing

Reluctance in a magnetic material is a property by virtue of which it opposes the creation of

For a two - way position control of lamp, the number of switches required is

Electric field intensity is

According to the coulomb’s law, the force between two point charges is

The unit of magnetizing field intensity is

The equation for electric flux density is given by

The most common waveforms of ac is

Electric flux density is a function of

The voltage of the earthed appliance when it is higher and when it is lower than the earth potential will