GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 435 - 437 of 1076

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Question 435

Gain and Directivity

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

For a matched junction, scattering parameters are given values, which one of the following is true?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 436

Superheterodyne Receivers

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Which of the following statements are correct with reference to super heterodyne receivers? (December)

i. The main advantage of superheterodyne receiver is its better tracking

ii. The main advantage of superheterodyne receiver is improvement in sensitivity

iii. The image channel rejection in superheterodyne receiver comes from IF stages only

iv. The image channel rejection in superheterodyne receiver comes from RF stage only

Choose the correct answer from the code given below:

Choices

Choice (4)Response

a.

(ii) and (iv) are correct

b.

(i) and (iv) are correct

c.

(ii) and (iii) are correct

d.

(i) and (ii) are correct

Question 437

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Which of the following is not correct in respect of a phase-lead compensation network? (December)

Choices

Choice (4)Response

a.

It increases gain at higher frequencies

b.

It is used when fast transient response is required

c.

It increases system bandwidth

d.

It is used when phase decreases rapidly near crossover frequency

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