Control Systems [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 12 - 15 of 81

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Question 12

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Consider the following statements with respect to the characteristic polynomial defined as

The system is stable for

ii. The system is unstable for

iii. The system is unstable for

iv. The system is stable for

Which of the above statements are correct?

Choices

Choice (4)Response

a.

(i) and (iv)

b.

(i) and (iii)

c.

(ii) and (iv)

d.

(ii) and (iii)

Question 13

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

The effect of adding poles and zeros can be determined for determining phase and gain margin by

Choices

Choice (4)Response

a.

Bode plot

b.

Magnitude Vs phase plot

c.

Nyquist plot

d.

Nicholas plot

Question 14

Control Systems

Appeared in Year: 2016 (UGC-NET)

Question

Match List-Ⅰ List-Ⅱ▾

Match the following lists:

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

A Lag Network

(i)
The Two Part Network Figure Choice A
(B)

A-bridge T filter

(ii)
The Two Part Network Figure Choice B
(C)

A Lead Network

(iii)
The Two Part Network Figure Choice C
(D)

A Lead-Lag Network

(iv)
The Two Part Network Figure Choice D

Choices

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

a.

  • (iii)
  • (iv)
  • (ii)
  • (i)

b.

  • (iii)
  • (i)
  • (ii)
  • (iv)

c.

  • (iv)
  • (iii)
  • (ii)
  • (i)

d.

  • (iii)
  • (i)
  • (iv)
  • (ii)

Question 15

Control Systems

Appeared in Year: 2018 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

A necessary and sufficient condition for a feedback system to be stable is that all the poles of the system transfer function have negative real parts. (December)

Reason(Ꭱ)

To obtain a bounded response, the poles of the closed loop system must be in the left half portion of the splan.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Ꭺ is false but Ꭱ is true

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