GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 500 - 503 of 1076

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Question 500

PCM, DPCM, Digital Modulation Schemes

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Quantizing Noise occurs in

Choices

Choice (4)Response

a.

Time-division multiplexing

b.

Frequency-division multiplexing

c.

Pulse-Code modulation

d.

Pulse width modulation

Question 501

Gain and Directivity

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Consider the following statements regarding a semiconductor:

1. Acceptor level lies close to the valence band.

2. Donor level close to the valence band.

3. n-type semiconductor behaves as a conductor at zero Kelvin.

4. p-type semiconductor behaves as a insulator at zero Kelvin.

Choices

Choice (4)Response

a.

2 & 3 are correct.

b.

1 & 3 are correct.

c.

1 & 4 are correct.

d.

3 & 4 are correct.

Question 502

Polarization, Phase and Group Velocity

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

When a plane wave propagating through free space, the direction of the field

1. ‘E’ is perpendicular to the direction of propagation.

2. ‘H’ is perpendicular to the direction of propagation.

3. ‘E’ is perpendicular to the direction of the field ‘H’ .

Choices

Choice (4)Response

a.

1,2 & 3

b.

1 & 3

c.

1 & 2

d.

2 & 3

Question 503

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

In a 8085 microprocessor, the resistor which holds address of the next instruction to be fetched is

Choices

Choice (4)Response

a.

Instructor Register

b.

Stack pointer

c.

Program counter

d.

Accumulator

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