GATE EE format:mcq PYQs & Answers — Page 38

Questions 371–380 of 437. Imported answers require independent review unless marked reviewed.

Topic practice 437 questionsPage 38 of 44

Two resistors with nominal resistance values

and

have additive uncertainties

and

, respectively. When these resistances are connected in parallel, the standard deviation of the error in the equivalent resistance

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A source is supplying a load through a 2-phase, 3-wire transmission system as shown in figure below. The instantaneous voltage and current in phase-a are

V and

A, respectively. Similarly for phase-b, the instantaneous voltage and current are

V and

A, respectively. The total instantaneous power flowing from the source to the load is

Diagram for Electrical Engineering question 9

Your answerChoose one option.

2200 W

4400 W

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A stationary closed Lissajous pattern on an oscilloscope has 3 horizontal tangencies and 2 vertical tangencies for a horizontal input with frequency 3 kHz. The frequency of the vertical input is

Your answerChoose one option.

1.5 kHz

2 kHz

3 kHz

4.5 kHz

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A 3-bus power system is shown in the figure below, where the diagonal elements of Y-bus matrix are:

pu,

pu and

pu.

Diagram for Electrical Engineering question 10

The per unit values of the line reactances

and

shown in the figure are

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For a 3-input logic circuit shown below, the output

can be expressed as

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A closed loop system has the characteristic equation given by

. For this system to be stable, which one of the following conditions should be satisfied?

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A phase-controlled, single-phase, full-bridge converter is supplying a highly inductive DC load. The converter is fed from a 230 V, 50 Hz, AC source. The fundamental frequency in Hz of the voltage ripple on the DC side is

Your answerChoose one option.

100

300

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The slope and level detector circuit in a CRO has a delay of 100 ns. The start-stop sweep generator has a response time of 50 ns. In order to display correctly, a delay line of

Your answerChoose one option.

150 ns has to be inserted into the y-channel

150 ns has to be inserted into the x-channel

150 ns has to be inserted into both x and y channels

100 ns has to be inserted into both x and y channels

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In the circuit shown, the diodes are ideal, the inductance is small, and

. Which one of the following statements is true?

Diagram for Electrical Engineering question 12

Your answerChoose one option.

D₁ conducts for greater than 180° and D₂ conducts for greater than 180°.

D₂ conducts for more than 180° and D₁ conducts for 180°.

D₁ conducts for 180° and D₂ conducts for 180°.

D₁ conducts for more than 180° and D₂ conducts for 180°.

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The Boolean expression

simplifies to

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GATE EE format:mcq PYQs

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Question 9

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Question 12

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Question 13