List of top Electrical Engineering Questions

To control voltage of a long shunt dc compound generator, a diverter resistance is connected across

In a wave winding, if \( y_b \) and \( y_c \) are back and commutator pitches respectively, then the front pitch \( y_f \) is given by

The eddy current loss and hysteresis loss of 1-\(\phi\), 100 kVA, 50 Hz transformer are 4 kW and 6 kW respectively. If frequency is increased by 10%, then total loss is

A DC generator with 8-pole, 480 armature conductors, wave winding, draws an armature current of 200 A. When brushes are shifted by \( 6^\circ \) electrical from GNP, the cross-magnetising amp-turn/pole is

The copper and iron losses of a 1-$\phi$ transformer are equal at 90% of full load and its value is 162 W. The total loss at 80% of full load is

The efficiency of a circuit at maximum power transfer condition is

Internal resistance of ideal current source is

In an ideal transformer, which of the following is correct?

In delta-star connection, the phase displacement between the primary voltage and secondary emfs is

In a two wattmeter method, if one wattmeter reads negative then

Form factor of a sine wave is

Thevenin equivalent of a circuit consists of

At resonance, power factor in a parallel RLC circuit is

Choose the correct statement

The varying electric fields are a source of

Phasor analysis is valid for

The dipole moment per unit volume is known as

If all resistances in delta are equal to 30 $\Omega$, then each resistance in star is

At resonance, voltage across L and C in series circuit is

Choose the correct statement

Identify the statement that is not true for ferromagnetic material

The superposition theorem is essentially based on the concept of:

Two thin parallel wires carry currents along the same direction. The force experienced by one due to the other is:

When both the number of turns and the core length of an inductive coil are doubled, its self-inductance will be:

The magnetic susceptibility of diamagnetic materials is: