# 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