GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 560 - 564 of 1076

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Question 560

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The current in a Zener diode is controlled by

Choices

Choice (4)Response

a.

Potential barrier

b.

Impact ionization

c.

Zener diode resistance

d.

External circuits resistance

Question 561

Sample and Hold Circuits, ADCs and DACs

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Which type of analogue-to-digital converter is often used in digital voltmeter?

Choices

Choice (4)Response

a.

Flash converter

b.

Successive approximation method

c.

Single slope A/D converter

d.

Dual slope A/D converter

Question 562

Circuits for Analog Communications

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The value of Numerical Aperture in optical fibre is

Choices

Choice (4)Response

a.

Equal to

b.

Less than 1

c.

Greater than 1

d.

Equal to 1

Question 563

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

A programmable Read-Only-Memory can be used as a synchronous counter.

Reason(Ꭱ)

Each memory location of a programmable Read-Only- Memory is programmed and can be read synchronously.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Ꭺ is true but Ꭱ is false

Question 564

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

Consider the following Excimer Lasers used for photolithography and surgery purposes: (June)

1. Ar-2 Excimer laser

2. ArF Excimer laser

3. XeCl Excimer laser

4. XeF Excimer laser

The correct sequence of the descending order of wavelength of operation is

Choices

Choice (4)Response

a.

1,2, 3,4

b.

2,3, 1,4

c.

4,3, 2,1

d.

1,3, 2,4

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