Communications-Analog Communications [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 1 - 5 of 50

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Question 1

Analog Communications
Superheterodyne Receivers

Appeared in Year: 2017 (UGC-NET)

Question

MCQ▾

The ability of a receiver to discriminate against the interfering signals is known as: (November paper 2)

Choices

Choice (4)Response

a.

Distortion

b.

Selectivity

c.

Sensitivity

d.

Fidelity

Question 2

Analog Communications
Amplitude Modulation and Demodulation

Question

MCQ▾

A wideband amplifier has a precise amplification factor ________.

Choices

Choice (4)Response

a.

Neutral

b.

Less than the wide range

c.

Over the wide range

d.

Equal to the wide range

Question 3

Analog Communications
Amplitude Modulation and Demodulation

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Which of the following statement is correct? (July)

Choices

Choice (4)Response

a.

MF radio frequency waves are called long waves and HF are called short waves.

b.

VLF and LF radio frequency waves are called long waves while HF waves are called short waves.

c.

LF radio waves are called long waves and VHF are called short waves

d.

ELF radio waves are called long waves and HF are called short waves.

Question 4

Analog Communications
Amplitude Modulation and Demodulation

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

The simple one dimensional diffusion process can be given by: (July)

Choices

Choice (4)Response

a.

b.

c.

d.

Question 5

Analog Communications
Amplitude Modulation and Demodulation

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Consider the following systems:

1) Satellite

2) Conventional public address system

3) Conventional radio receiver

4) Laser detector

Arrange the above systems in the order of their increasing order of operational frequency: (July)

Choices

Choice (4)Response

a.

2) , 3) , 1) , 4)

b.

2) , 3) , 4) , 1)

c.

3) , 2) , 1) , 4)

d.

1) , 2) , 3) , 4)

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