GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 336 - 339 of 1076

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Passage

Sensitivity considerations often are important in the design of Control Systems. Because all physical elements have properties that change with environment and age, we cannot always consider the parameters of the Control System to be completely stationary over the entire operating life of system. For instance, the winding resistance of an electric motor changes as the temperature of the motor rises during the operation. Control System with electric components may not operate normally when first turned on because of the still-changing system during warm-up. This phenomenon is sometimes called “morning sickness” . Most duplicating machines have a warm-up period during which time operation is blocked out when first turned on.

(July)

Question 336 (1 of 5 Based on Passage)

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Which of the following statements is correct?

Choices

Choice (4)Response

a.

A feedback can increase or decrease the sensitivity of a system.

b.

A feedback can only decrease the sensitivity of the system.

c.

A feedback can only increase the sensitivity of the system.

d.

A feedback never affects the sensitivity of a system.

Question 337 (2 of 5 Based on Passage)

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

The sensitivity of the overall (closed-loop) transfer function for the system shown below, with respect to forward path transfer function at will be: (July)

The Overall (Closed-Loop) Transfer Function

Choices

Choice (4)Response

a.

0.398

b.

c.

0.583

d.

Question 338 (3 of 5 Based on Passage)

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

A good control should be: (July)

Choices

Choice (4)Response

a.

Insensitive to parameter variations

b.

Very sensitive to parameter variations

c.

Sensitive to input commands.

d.

Insensitive to input commands

Question 339 (4 of 5 Based on Passage)

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

The open loop transfer function of a Unity feedback Control System is given by the steady state error will be: (July)

Choices

Choice (4)Response

a.

rad

b.

rad

c.

rad

d.

rad

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