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GATE 2019: Topper Quiz 6 (App update required to attempt this test)

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Question 1

If voltages

and

in the circuit are 100V each, then R = …………………… (in ohms)

Question 2

What will be the Fourier coefficients a₀ and b_n of the given waveform shown if the maximum amplitude is A?

Question 3

Consider the unity feedback control system shown. The value of K that results in a phase margin of the system to be 30^o is _______.

Question 4

The frequency at the output of the following cascaded circuit is …………. Hz.

Question 5

An oscillator circuit using ideal op-amp and diodes is shown in the figure

The time duration for +ve part of the cycle is

and for-ve part is

The value of

will be___________.

Question 6

A DC-DC boost converter, as shown in the figure below, is used to boost 360V to 400V, at a power of 4 kW. All devices are ideal. Considering continuous inductor current, the rms current in the solid state switch (S), in ampere, is ______.

Question 7

A transmission line has a 0.084 pu impedance. If the base voltage is increased by 1.4 times, and the base MVA is doubled, determine the new pu impedance of the transmission line.

Question 8

The rotor poles of a 4 pole synchronous generator shift by 25 mechanical degrees from no-load to full-load. The torque angle at full-load is _________ degrees.

Question 9

A capacitive voltage divider is used to measure the bus voltage V_bus in a high-voltage 50 Hz AC system as shown in the figure. The measurement capacitors C₁ and C₂ have tolerances of ±10% on their nominal capacitance values. If the bus voltage V_bus is 100 kV rms, the maximum rms output voltage V_out (in kV), considering the capacitor tolerances, is _________.

Question 10

A particle having charge of 2 C is moving with a velocity of 1 m/s in the presence of electric as well as magnetic field with magnitude of 7.5 units and 9.5 units respectively. What is the change in force experienced by the charge particle if the velocity is halved?

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ESE & GATE EE General

Jul 14ESE & GATE EE