GATE EE 2020 Paper 1 — page 6

Questions 16–18 of 65. Imported answers require review unless explicitly marked reviewed.

and

are, respectively, the rms and average values of

, and similarly,

and

are, respectively, the rms and average values of

are independent of

. Which of the following is true?

Your answerChoose one option.

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A three-phase cylindrical rotor synchronous generator has a synchronous reactance

and a negligible armature resistance. The magnitude of per phase terminal voltage is

and the magnitude of per phase induced emf is

. Considering the following two statements, P and Q, P: For any three-phase balanced leading load connected across the terminals of this synchronous generator,

is always more than

. Q: For any three-phase balanced lagging load connected across the terminals of this synchronous generator,

is always less than

. Which of the following options is correct?

Your answerChoose one option.

P is false and Q is true.

P is true and Q is false.

P is false and Q is false.

P is true and Q is true.

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A lossless transmission line with 0.2 pu reactance per phase uniformly distributed along the length of the line, connecting a generator bus to a load bus, is protected up to 80 % of its length by a distance relay placed at the generator bus. The generator terminal voltage is 1 pu. There is no generation at the load bus. The threshold pu current for operation of the distance relay for a solid three phase-to-ground fault on the transmission line is closest to:

Your answerChoose one option.

1.00

3.61

5.00

6.25

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2020 · Paper 1

Question 6

Question 7

Question 8