NTA-NET (Based on NTA-UGC) Electronic Science (Paper-II): Questions 14 - 18 of 132

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Question number: 14

» Electric Communications » Intermediate Frequency and Principle of Superheterodyne Receiver

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Appeared in Year: 2017

MCQ▾

Question

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 number: 15

» Microwave Communications » Antenna Parameters

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Appeared in Year: 2017

MCQ▾

Question

Helical antennas are often used for satellite tracking in VHF range because of: (November paper 2)

Choices

Choice (4) Response

a.

Ionospheric refraction

b.

Super - refraction

c.

Troposcatter

d.

Faraday effect

Question number: 16

» Digital Electronics » Boolean Algebra and Minimization Techniques

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Appeared in Year: 2017

MCQ▾

Question

The Boolean SOP expression obtained from the truth table is:

Table of Boolean SOP expression

Table of Boolean SOP expression

Inputs

Output

A

B

C

X

(November paper 2)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 17

» Linear Integrated Circuits and Op-Amps » Rectifiers

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Appeared in Year: 2017

MCQ▾

Question

In a full wave rectifier, the current in each of the diode flows for: (November paper 2)

Choices

Choice (4) Response

a.

Quarter cycle of input signal

b.

Full cycle of input signal

c.

Half cycle of input signal

d.

Three fourth cycle of input signal

Question number: 18

» Instrumentation » Bridge and Potentiometers

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Appeared in Year: 2017

MCQ▾

Question

Sensitivity of potentiometer can be increased by: (November paper 2)

Choices

Choice (4) Response

a.

Decreasing the resistance in the rheostat in the series with the battery

b.

Decreasing the current in potentiometer wire

c.

Decreasing the length of potentiometer wire

d.

Increasing the length of potentiometer wire

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