GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 753 - 756 of 1076

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Question 753

Appeared in Year: 2014 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

The series pass transistor in a regulator is in class A mode. (December)

Reason(Ꭱ)

Class A is a switching mode and yields high efficiency.

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question 754

Superposition, Thevenin and Norton's, Maximum Power Transfer

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

The Thevenin՚s equivalent across AB is (December)

Thevenin՚s Equivalent Across AB

Choices

Choice (4)Response

a.

Thevenin՚s Equivalent Across AB

b.

Thevenin՚s Equivalent Across AB

c.

Thevenin՚s Equivalent Across AB

d.

Thevenin՚s Equivalent Across AB

Question 755

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

A PIN diode cannot be used as (December)

i. Microwave switch

ii. Microwave mixer

iii. Microwave detector

Which is correct?

Choices

Choice (4)Response

a.

i, iii

b.

i, ii

c.

i, ii, iii

d.

ii, iii

Question 756

Question

MCQ▾

The pinch off voltage for a n-channel JFET is 4 V, when , so find the value of pinch-off voltage for drain to source voltage :

Choices

Choice (4)Response

a.

3 V.

b.

4 V.

c.

5 V.

d.

1 V.

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