# 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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