GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 628 - 631 of 1076

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Question 628

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Arrange the following in terms of their increasing conductivity: (September)

1. Copper

2. Steel

3. Leather

4. Rubber

The correct sequence is

Choices

Choice (4)Response

a.

4,3, 2,1

b.

3,4, 2,1

c.

2,1, 3,4

d.

4,3, 1,2

Question 629

Superposition, Thevenin and Norton's, Maximum Power Transfer

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

A linear two terminal circuit can be replaced by an equivalent circuit consisting of a voltage source in series with a resistor where is the ratio of (June)

1. Open circuit voltage to the short circuit current at the terminal pair.

2. Short circuit current to the short circuit voltage at the terminal.

3. Open circuit voltage to the open circuit current at the terminal pair.

4. The independent sources are turned off.

Choices

Choice (4)Response

a.

2 and 4

b.

1 and 4

c.

2 and 3

d.

3 and 4

Question 630

Radiation Pattern

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

When Q of an antenna increases, the bandwidth (September)

Choices

Choice (4)Response

a.

Decreases

b.

Stays constant equal to unity

c.

Increases

d.

Stays constant equal to zero

Question 631

Appeared in Year: 2014 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

An EDFA is usually pumped at 980 nm wavelength, which means that Erbium ions at ground level absorb energy. (June)

Reason(Ꭱ)

This absorbed energy is transferred to high frequency signals to boost up.

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

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