List of top Electrical Engineering Questions

A fully transposed transmission line has

Under steady state short circuit conditions, the armature reaction of a synchronous generator is:

The insulators used in transmission lines at river and road crossing are:

In case of the compensation of the power transmission lines, for the same voltage boost, the reactive power capacity of a shunt capacitor is ____________ that of a series capacitor.

In nuclear reactors, the most commonly used neutron absorber is:

The characteristics of rate of convergence of Gauss-Seidel method and Newton-Raphson method respectively are

The current densities in human bodies lie in the proximity of the transmission line are:

A generating station has a maximum demand of \(25\text{ MW}\), a load factor of \(60%\), a plant capacity factor of \(50%\). What is the reserve capacity of the plant?

Resistance switching is used in circuit breaker to:

For an \(n^{\text{th}}\) order system to be state controllable, which of the following is not a correct statement?

When the supply voltage to an induction motor is reduced by 10%, the maximum torque will be decreased approximately by

In which relay, the relay operation depends upon the ratio of voltage to current?

What is the VA output required for a CT of \(5\text{ A}\) rated secondary current when burden consists of a relay requiring \(7.5\text{ VA}\) at \(5\text{ A}\) and connecting lead resistance of \(0.08\text{ }\Omega\)?

Frequency of rotor current of a 3-\(\phi\), 4-pole, 50 Hz induction motor is 3 Hz. Speed of the motor is

The step angle of a 3-\(\phi\) (A, B, C), 6 stator pole, 4 rotor teeth stepper motor if excited sequentially i.e, A, AB, B, BC, C, CA, and so on is:

Two 3-\(\phi\) induction motors with \( p_1 \) and \( p_2 \) poles are cascaded together. Then the possible number of speeds are

In torque-slip curve of a 1-\(\phi\) induction motor, the backward torque is

Slope of the tangent drawn on initial portion of O.C.C of synchronous generator is

The disadvantage of Hopkinson's test on two dc shunt machines is

If \( \delta \) is load angle, the real power of 3-\(\phi\) synchronous motor is

If the locus of minimum armature currents of V-curves of synchronous motor is a straight line, then the slope of the line is

When load current of a dc series motor is increased, then

Speed of a 3-\(\phi\), 4-pole, 60 Hz induction motor at 75% of full-load is 1700 rpm. The speed at full-load can be

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

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