GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 467 - 470 of 1076

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Question 467

Sample and Hold Circuits, ADCs and DACs

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Identify the fastest analogue to digital converter (June)

Choices

Choice (4)Response

a.

Successive approximation

b.

Parallel conversion

c.

Dual-slope integration

d.

Ramp conversion

Question 468

Amplitude Modulation and Demodulation

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

In FM, when frequency deviation doubled, then (June)

Choices

Choice (4)Response

a.

Modulation Index is doubled

b.

Modulation Index halved

c.

Modulation Index is decreased

d.

No change occurs in modulation index values

Question 469

Boolean Algebra, Minimization of Functions

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Consider the following logic families: (June)

1. MOS

2. TTL

3. RTL

4. ECL

The correct sequence of the logic families in the order of their increasing noise margin is

Choices

Choice (4)Response

a.

4,3, 1,2

b.

3,4, 2,1

c.

3,4, 1,2

d.

4,3, 2,1

Question 470

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

An LTI discrete system represented by the difference equation is unstable. (June)

Reason(Ꭱ)

A system is unstable if the roots of the characteristic equation lie outside the unit circle.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

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

c.

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

d.

Ꭺ is true but Ꭱ is false

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