Electrical Engineering GATE 2021 Questions with Answer

Ques 1 Analog Electronics

The waveform shown in solid line is obtained by clipping a full-wave rectified sinusoid (shown dashed). The ratio of the RMS value of the full-wave rectified waveform to the RMS value of the clipped waveform is _______. (Round off to 2 decimal places.)

Ques 2 Analog Electronics

A 100 Hz square wave, switching between 0 V and 5 V, is applied to a CR high-pass filter circuit as shown. The output voltage waveform across the resistor is 6.2 V peak-to-peak. If the resistance R is 820 Ω, then the value C is _______ μF. (Round off to 2 decimal places.)

Ques 3 Circuit Theory

A three-phase balanced voltage is applied to the load shown. The phase sequence is RYB. The ratio \\frac{|I_B|}{|I_R|} is

Ques 4 Circuit Theory

In the given circuit, for maximum power to be delivered to R_L, its value should be _______ Ω. (Round off to 2 decimal places.)

Ques 5 Circuit Theory

An air-core radio-frequency transformer as shown has a primary winding and a secondary winding. The mutual inductance M between the windings of the transformer is _______ μH. (Round off to 2 decimal places.)

Ques 6 Circuit Theory

For the network shown, the equivalent Thevenin voltage and Thevenin impedance as seen across terminals 'ab' is

Ques 7 Circuits

In the given circuit, the value of capacitor C that makes current I=0 is _______ μF.

Ques 8 Circuits

In the given circuit, for voltage v_y to be zero, the value of β should be _______ (Round off to 2 decimal places).

Ques 9 Circuits

The Bode magnitude plot for the transfer function V_o(s) / V_i(s) of the circuit is as shown. The value of R is _______ Ω. (Round off to 2 decimal places.)

Ques 10 Circuits

A signal generator having a source resistance of 50 Ω is set to generate a 1 kHz sinewave. Open circuit terminal voltage is 10 V peak-to-peak. Connecting a capacitor across the terminals reduces the voltage to 8 V peak-to-peak. The value of this capacitor is _______ F. (Round off to 2 decimal places.)

Ques 11 Circuits

In the circuit, switch 'S' is in the closed position for a very long time. If the switch is opened at time t = 0, then i_L(t) in amperes, for t≥0 is

Ques 12 Circuits

The input impedance, Z_in(s), for the network shown is

Ques 13 Control Systems

Consider a closed-loop system as shown. G_p(s) = ¼4.4 / s(1 + 0.1s) is the plant transfer function and G_c(s) = 1 is the compensator. For a unit-step input, the output response has damped oscillations. The damped natural frequency is _______ rad/s. (Round off to 2 decimal places.)