GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 308 - 311 of 1076

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Question 308

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 309

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

For optical sources, following statements are given:

1) They should have large spectral bandwidth

2) They should have very narrow special line width

3) They should accurately track the electrical input signal

4) The source should have linearity property

Out of the above, following are correct: (July)

Choices

Choice (4)Response

a.

1) , 2) and 3) only

b.

1) , 3) and 4) only

c.

2) , 3) and 4) only

d.

2) and 3) only

Question 310

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 311

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

In which of the following number systems, AC flag is used in ? (July)

Choices

Choice (4)Response

a.

Octal

b.

BCD

c.

Binary

d.

Hexadecimal

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