List of top Electrical Engineering Questions

A single-phase inverter has a square wave output voltage. The percentage of the fifth harmonic component in relation to the fundamental component is:
When the MOSFET is in the ON state, the channel of the device behaves like:
The duty cycle value of a buck converter when the switching frequency is 250 kHz and the ON time is 2\( \mu s \) is:

The output of the following program is: 

To eliminate the 5th harmonic voltage from the phase voltage of an alternator, the coils should be short-pitched by an electrical angle of:

Which of the following is true regarding the number of computations required to compute an \( N \)-point DFT?
Which of the following justifies the linearity property of the \( z \)-transform? \( x(n) \leftrightarrow X(z) \).

The flux set up by the armature current, which does not cross the air gap and takes a different path, is called:

What is the width of the main lobe of the frequency response of a rectangular window of length \( M-1 \)?
The resultant magnetic flux generated in the closed surface will be
H in the region \( 0 \leq l \leq a \) for an infinitely long co-axial transmission line is:
Which of the following defines the FIR filter for length \( M \), input \( x(n) \), and output \( y(n) \)?

AC machines should have proper _______ in order to limit the operating temperature.

The direction of current flow in the circuit is such that the induced magnetic field produced by the induced current will oppose the original magnetic field. This is:

The electromagnetic wave propagates in free space with a speed of:

On execution of the program segment: 

Time lag for breakdown is:
In impulse testing of transformers, fault location is usually done by:
Four identical alternators each rated for 20 MVA, 11 kV having a sub-transient reactance of 16% are working in parallel. The short circuit level at the bus bars is:
Surge impedance of a lossless transmission line is (if \( L \) = inductance/m and \( C \) = capacitance/m):
The breakdown strength of air for small gaps (1 mm) under uniform field condition and standard atmospheric conditions will be:
Optimum number of stages for Cockcroft-Walton voltage multiplier circuit are:
The 8051 program segment, which performs ‘software polling’ to check if the Timer-0 counting has completed, is:
The most important test to assert the proper functions of a surge diverter is:
An R-C voltage divider has an HV arm capacitance, \( C_1 = 600 \) pF, resistance \( R = 400 \) \( \Omega \), and equivalent ground capacitance \( C_g = 240 \) pF. The effective time constant of the divider in nanoseconds is: