List of top Electrical Engineering Questions

With reference to the Fast Fourier Transform, if \( W_4^1 = W_x^2 \), then what is the value of \( x \)?

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

The output of the following 8051 Assembly code is: 

The transfer function of a first-order controller is given as: \[ G_c(s) = K \frac{(s + a)}{(s + b)} \] where \( K, a, b \) are positive real numbers. The condition for this controller to act as a phase lag compensator is:
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:
The state variable description of a system is: \[ \dot{X} = AX + BU, \quad A = \begin{bmatrix} 0 & 3 \\ 3 & 0 \end{bmatrix} \] The poles of the system are located at:
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 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:
Electric traction uses a power supply of:
Filament lamps operate normally at a power factor of:
Candela is the unit of:
The RMS output voltage at fundamental frequency of a single-phase, full-bridge inverter with input voltage of 48V DC, feeding a load of 2.4 \( \Omega \) is:
What is the operation carried out by the 8051 instruction: ‘SETB 0D3’?
In a single-phase semi-converter without a freewheeling diode, for discontinuous conduction and extinction angle \( \beta>\pi \), each SCR conducts for the period:
A slab of insulating material 130 cm\(^2\) in area and 1 cm thick is to be heated by dielectric heating. The power required is 380 W at 30 MHz. The material has a relative permittivity of 5 and a power factor of 0.05. Determine the necessary voltage.
Spot welding is used for:
Material used for solar cell is:

Corona loss increases with:

200 V, 50 Hz inductive circuit takes a current of 10 A lagging the voltage by 30°. Calculate inductance of the circuit.

The nuclear plants are suitable for:

Which of the following matrices reveals the topology of the power system network?
Magnetizing inrush current is rich in: