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GATE 2019: Mini Mock (App update required to attempt this test)

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Question 1

The feedback topology in the amplifier circuit (the base bias circuit is not shown for simplicity) in the figure is

Question 2

The output ‘X’ for the given circuit is

Question 3

An open loop control system results in a response of for a unit impulse input. The DC gain of the control system is _______.

Question 4

Three 1-Φ transformers are connected to form a 3-Φ transformer bank. The transformers are connected in the following manner.

The nomenclature for the above connection for phase sequence ABC is

Question 5

Find the two elements in series circuit, given that the current and total voltage is
 

Question 6

A composite conductor consists of three conductors of radius R each. The conductors are arranged as shown below. The geometric mean radius (GMR) (in cm) of the composite conductor is kR. The value of k is ______.

Question 7

In the circuit shown below,

If Vs = 200 V, R1 = 10 Ω and R2 = 100 Ω then the peak current through T2 is ________ A?

Question 8

Which one of the following potential satisfy Laplace Equation ?

Question 9

An energy meter, having meter constant of 1200 revolutions kWh, makes 20 revolutions in 30 seconds for a constant load. The load, in kW is ______

Question 10

The inverse laplace of ; ROC: is

Question 11

A transistor circuit is given below. The Zener diode breakdown voltage is 5.3 V as shown The base to emitter voltage droop to be 0.6V. The value of the current gain is

Question 12

Consider the digital circuit shown below

Where, timing diagram is given below

Value of A and B at 1, 3, 5 and 8 seconds are

Question 13

Given below is an asymptotic bode plot representing an open-loop transfer function.

How many non-zero poles does the transfer function contain?

Question 14

A 4 KVA, 3 phase, 110 V, 50 Hz, star connected salient pole alternator has X= 3 Ω and X= 2 Ω. The machine id delivering full load current at 0.8 p.f. lagging at rated voltage. The power output of the alternator is ………………kW. [Write the answer upto two decimal point]

Question 15

In the given circuit, the parameter k is positive and the power dissipated in the 2 Ω resistor is 12.5 W. The value of k is ________

Question 16

A single phase induction motor draws 12 MW power at 0.6 lagging power factor. A capacitor is connected in parallel to the motor to improve the power factor of the combination of motor and capacitor to 0.8 lagging. Assuming that the real and reactive power drawn by the motor remains same as before, the reactive power delivered by the capacitor in MVAR is ____________.

Question 17

In a voltage commulated chopper, voltage input V = 250 V, constant load current I0 = 20 A, switching frequency is 250 Hz, commulating components L = 1.25 mH and C = 8 μF. The exact minimum average output voltage is ______ V.

Question 18

Two charges and are located at points A (5, 9, 3) and B (x, 2x, 3x) respectively. If the distance between A and B is 12 m, determine the unit vector in the direction of . Consider x to be positive.

Question 19

D: Distance between Screen and the centre of Deflection plates
: Length of Deflection plates
: Distance between the deflecting plates
: Accelerating voltage
With the above notation, Deflection sensitivity of a CRT using electrostatic method of deflection is given by

Question 20

D is the delay element of 1. The transfer function of a system is , then the value of a+b is

Question 21

In the complex plane , the angle between line (1 + i) and (–1 + i) is _____ degrees

Question 22

Given that and then value of at t = 0 is –

Question 23

If then value of at t = 2

Question 24

Select the most appropriate antonym of the given word.
AGGRANDIZE

Question 25

When a person sells 25 articles for Rs. 25, he losses 10%. To gain 20%, how many articles should he sell for Rs. 24?
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Dec 20ESE & GATE EE