Engineering Mathematics [GATE (Graduate Aptitude Test in Engineering) Electrical Engineering]: Questions 153 - 157 of 169

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Question 153

Engineering Mathematics

Appeared in Year: 2019

Question

MCQ▾

A six-pulse thyristor bridge rectifier is connected to a balanced three-phase, 50 Hz AC source. Assuming that the DC output current of the rectifier is constant, the lowest harmonic component in the AC input current is

Choices

Choice (4)Response

a.

300 Hz

b.

250 Hz

c.

150 Hz

d.

100 Hz

Question 154

Engineering Mathematics

Appeared in Year: 2020

Question

Consider the initial value problem below. The value of y at x = ln 2, (rounded off to 3 decimal places) is ________.

Question 155

Engineering Mathematics

Appeared in Year: 2018

Question

MCQ▾

The value of the integral in counter clockwise direction around a circle C of radius 1 with center at the point is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 156

Engineering Mathematics

Appeared in Year: 2021

Question

MCQ▾

In a single-phase transformer, the total iron loss is 2500 W at nominal voltage of 440 V and frequency 50 Hz. The total iron loss is 850 W at 220 V and 25 Hz. Then, at nominal voltage and frequency, the hysteresis loss and eddy current loss respectively are:

Choices

Choice (4)Response

a.

600 W and 250 W

b.

1600 W and 900 W

c.

250 W and 600 W

d.

900 W and 1600 W

Question 157

Engineering Mathematics

Appeared in Year: 2019