GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 477 - 480 of 1076

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Question 477

Criterion for Oscillation, Single-Transistor and Opamp Configurations

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Which of the following oscillator make use of both positive and negative feedbacks? (June)

Choices

Choice (4)Response

a.

Hartley oscillator

b.

Phase shift oscillator

c.

Colpit՚s oscillator

d.

Wein-Bridge oscillator

Question 478

Appeared in Year: 2013 (UGC-NET)

Question

Match List-Ⅰ List-Ⅱ▾

Match the following: (June)

List-Ⅰ (Column-I)List-Ⅱ (Column-II)
(A)

LASER

(i)

Spontaneous emission

(B)

Solar Cell

(ii)

Stimulated emission

(C)

LED

(iii)

Power generator

(D)

Photo diode

(iv)

Detector

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iii)
  • (iv)
  • (i)
  • (ii)

b.

  • (iii)
  • (ii)
  • (iv)
  • (i)

c.

  • (ii)
  • (iii)
  • (i)
  • (iv)

d.

  • (iv)
  • (iii)
  • (i)
  • (ii)

Question 479

Logic Gates and Their Static CMOS Implementation

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

The race hazard problem does not occur in combinational circuits. (June)

Reason(Ꭱ)

The output of a combinational circuit depends upon present inputs only.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

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

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question 480

Filtering of Random Signals through LTI Systems

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Out of the following memory types, one that is volatile is (June)

Choices

Choice (4)Response

a.

Magnetic disc

b.

Ferrite core

c.

Semiconductor RAM

d.

Semiconductor ROM

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