GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 776 - 780 of 1076

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Question 776

Superheterodyne Receivers

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

Which of the following are not the parts of an AM superheterodyne receiver? (December)

1. De-emphasis network

2. Mixer

3. IF Amplifier

4. Limiter

Choices

Choice (4)Response

a.

1 & 4

b.

2 & 4

c.

1 & 3

d.

1 & 2

Question 777

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

The assembler directive used to give name to some value or symbol for 8086 ASM-86 is (December)

Choices

Choice (4)Response

a.

DD

b.

PROC

c.

NAME

d.

EQU

Question 778

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

The driving point impedance Z (s) of a network has pole – zero plot as shown, if , then ? (December)

The Driving Point Impedance Z (S) of a Network Has Pole – Zer …

Choices

Choice (4)Response

a.

b.

c.

d.

Question 779

Question

MCQ▾

In a n-channel JFET, is held constant. is less than the breakdown voltage. As is increased:

Choices

Choice (4)Response

a.

Conducting cross – sectional area of the channel ‘S’ and the channel current density ‘J’ both increases.

b.

‘S’ decreases and ‘J’ decreases.

c.

‘S’ decreases and ‘J’ increases.

d.

‘S’ increases and ‘J’ decreases.

Question 780

Amplitude Modulation and Demodulation

Appeared in Year: 2014 (UGC-NET)

Question

True-False▾

Statements

  1. DSB has two side bands and SSB has one (December)

  2. DSB has carrier and two side bands and SSB has a carrier and a side band

  3. DSB has carrier and two side bands and SSB without carrier and two different side bands.

Choices

Choice (4)Response

a.

Only statement Ⅲ is true.

b.

Only statement Ⅰ is true.

c.

Both statement Ⅰ & statement Ⅱ are true.

d.

Only statement Ⅱ is true.

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