NTA-NET (Based on NTA-UGC) Electronic Science (Paper-II): Questions 54 - 57 of 124

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Question number: 54

» Solid State Device and Fabrication » IC Fabrication-Crystal Growth

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Appeared in Year: 2018

MCQ▾

Question

Which of the following statements are correct?

1) CMOS has higher speed and smaller power than BJT.

2) CMOS ICs inputs should never be left unconnected as it may damage the device.

3) CMOS ICs with Schmitt trigger inputs are used for better noise immunity.

4) CMOS is most popular logic family in VLSI Technology. (July)

Choices

Choice (4) Response

a.

1), 2) and 4) are correct

b.

2), 3) and 4) are correct

c.

1), 3) and 4) are correct

d.

1), 2) and 3) are correct

Question number: 55

» Digital Electronics » Logic Families

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Appeared in Year: 2018

MCQ▾

Question

The advantage/disadvantage of Schottky TTL logic circuit over Standard TTL logic circuit is that: (July)

Choices

Choice (4) Response

a.

It provides low power consumption.

b.

It provides simple circuitry.

c.

It gives low switching speed.

d.

It does not virtually eliminates saturation delay time.

Question number: 56

» Electric Communications » Frequency and Phase Modulation

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MCQ▾

Question

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 number: 57

» Optical Communication » Optical Sources - LED

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Appeared in Year: 2018

MCQ▾

Question

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