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GATE 2019: Topper Quiz 18 (App update required to attempt this test)

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Question 1

The feedback used in the circuit shown in figure can be classified as

Question 2

In a circuit, if each resistance has value of 20 kohm and V1 = 1.5 V, V2 = 2.5 V, then what will be the value of Vout ?

Question 3

Which of the following is the 2’s complement form of -68?

Question 4

An example of self-complementing code-

Question 5

A generator has speed regulation as 0.125 Hz/MW and load frequency constant β as 2 MW/Hz. If the change in frequency is 0.2 Hz, then change in load is _______ MW.

Question 6

The fuel cost functions of two power plants are
Plant P1: C1 = 0.05Pg12 + APg1 + B
Plant P2: C2 = 0.10Pg22 + 3APg2 + 2B
where, Pg1 and Pg2 are the generated powers of two plants, and A and B are the constants. If the two plants optimally share 1000 MW load at incremental fuel cost of 100 Rs/MWh, the ratio of load shared by plants P1 and P2 is

Question 7

A six pulse thyristor rectifier bridge is connected to a balanced 50 Hz three phase ac source. Assuming that the dc output current of the rectifier is constant, the lowest frequency harmonic component in the ac source line current is

Question 8

In AC to DC circulating current dual converters are operated with the following relationship between their triggering angles (α1 and α2).

Question 9

The frequency of rotor emf of an 8-pole induction motor is 2 Hz. If the supply frequency is 50 Hz, then the motor speed is

Question 10

A small 3-phase induction motor has a short-circuit current 5 times of full-load current and full-load slip 5%. If starting resistance starter is used to reduce the impressed voltage to 60% of normal voltage, the starting torque obtained in terms of full load torque would be

Question 11

For the characteristic equation

The number of roots with negative real part are _____.

Question 12

Introduction of integral action in the forward path of a unity feedback system will result in a

Question 13

The Laplace transform and the ROC of the signal is

Question 14

Consider the system with following input-output relation where, x[n] is the input and y[n] is the output. The system is

Question 15

A shunt resistance of 25 is required for extending the range of an ammeter from 100 μA to 500 μA. The value of internal resistance of this ammeter will be

Question 16

In two-wattmeter method of measuring power in a balanced 3-phase circuit, the readings of the two wattmeters are in the ratio of 1 : 2, the circuit power factor is

Question 17

A capacitor consisting two parallel plates (as shown in figure) 0.45m by 0.45m separated by 0.003m in air. If it is charged to a potential of 600V then the energy density is….. joules.


Question 18

Given below are B1 and B2, which of the following statements are most appropriate

Question 19

In the figure shown, all elements used are ideal. For time t < 0. S1 remained closed and S2 open. At t = 0, S1 is opened and S2 is closed. If the voltage Vc2 across the capacitor C2 at t = 0 is zero, the voltage across the capacitor combination at t = 0+ will be ______Volts.

Question 20

If the initial rate of rise of the current is 1.25 A/s, find the value of L(in H).
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Feb 5ESE & GATE EE