GATE EE format:nat PYQs & Answers — Page 12

Questions 111–120 of 256. Imported answers require independent review unless marked reviewed.

Topic practice 256 questionsPage 12 of 26

The power input to a 500 V, 50 Hz, 6-pole, 3-phase induction motor running at 975 RPM is 40 kW. The total stator losses are 1 kW. If the total friction and windage losses are 2.025 kW, then the efficiency is ________%.

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An alternator with internal voltage of

p.u. and synchronous reactance of 0.4 p.u is connected by a transmission line of reactance 0.1 p.u to a synchronous motor having synchronous reactance 0.35 p.u and internal voltage of

p.u. If the real power supplied by the alternator is 0.866 p.u, then

is ____ degrees. (Round off to 2 decimal places.) (Machines are of non-salient type. Neglect resistances.)

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The Bode magnitude plot for the transfer function

of the circuit is as shown. The value of R is ________ Ω. (Round off to 2 decimal places.)

Diagram for Electrical Engineering question 20

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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 ______ μF. (Round off to 2 decimal places.)

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A 16-bit synchronous binary up-counter is clocked with a frequency

. The two most significant bits are OR-ed together to form an output Y. Measurements show that Y is periodic, and the duration for which Y remains high in each period is 24 ms. The clock frequency

is ____________ MHz. (Round off to 2 decimal places.)

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In the BJT circuit shown, beta of the PNP transistor is 100. Assume

V. The voltage across

will be 5 V when

is ____ kΩ. (Round off to 2 decimal places.)

Diagram for Electrical Engineering question 23

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In the circuit shown, the input

is a sinusoidal AC voltage having an RMS value of

. The worst-case peak-inverse voltage seen across any diode is _____ V. (Round off to 2 decimal places.)

Diagram for Electrical Engineering question 24

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In the circuit shown, a 5 V Zener diode is used to regulate the voltage across load

. The input is an unregulated DC voltage with a minimum value of 6 V and a maximum value of 8 V. The value of

is 6

. The Zener diode has a maximum rated power dissipation of 2.5 W. Assuming the Zener diode to be ideal, the minimum value of

is _____

Diagram for Electrical Engineering question 25

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Let A be a

matrix such that

is a null matrix, and let I be the

identity matrix. The determinant of

is _____________.

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A three-phase balanced voltage is applied to the load shown. The phase sequence is RYB. The ratio

is ___________.

Diagram for Electrical Engineering question 39

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GATE EE format:nat PYQs

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25

Question 38

Question 39