NTA-NET (Based on NTA-UGC) Electronic Science (Paper-II): Questions 1 - 5 of 132

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Question number: 1

» Electric Communications » Frequency and Phase Modulation

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MCQ▾

Question

Arrange the following communication systems in increasing order of their available commercial bandwidth:

i. Satellite Communication System

ii. Amplitude Modulated System

iii. Frequency Modulated System

iv. Two-line transmission system

Correct sequence is

Choices

Choice (4) Response

a.

iv, iii, ii, i

b.

i, ii, iii, iv

c.

i, iii, ii, iv

d.

iv, ii, iii, i

Question number: 2

» Solid State Device and Fabrication » Electronic Transport in Semiconductor

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MCQ▾

Question

Semi-conductors have

Choices

Choice (4) Response

a.

Resistance does not change with temperature

b.

Positive temperature coefficient of resistance

c.

Negative temperature coefficient of resistance

d.

Zero temperature coefficient of resistance

Question number: 3

» Electric Communications » Frequency and Phase Modulation

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MCQ▾

Question

According to Hatley’s law

Choices

Choice (4) Response

a.

The maximum rate of information depends on the channel bandwidth

b.

The maximum rate of information depends on the depth of modulation

c.

Only binary codes can be used

d.

Redundancy is essential

Question number: 4

» Solid State Device and Fabrication » PN Junction

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Appeared in Year: 2017

MCQ▾

Question

The depletion region in a junction diode contains charges that are: (November paper 2)

Choices

Choice (4) Response

a.

Mostly minority carriers

b.

Fixed donor and acceptor ion

c.

Mobile donor and acceptor ion

d.

Mostly majority carriers

Question number: 5

» Linear Integrated Circuits and Op-Amps » Single Stage Amplifiers

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Appeared in Year: 2017

MCQ▾

Question

The Q point of a voltage amplifier is selected in the middle of the active Region because:

(1) In this case it requires a small dc voltage

(2) The operating point becomes stable

(3) It gives distortion less output

(4) It is suitable for small input signals without distorted output

Which of the following is correct? (November paper 2)

Choices

Choice (4) Response

a.

(2) and (4)

b.

(2) and (1)

c.

(1) and (4)

d.

(3) and (4)

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