Control Systems-Basic Control System Components [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 1 - 4 of 4

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Question 1

Appeared in Year: 2017

Question MCQ▾

Consider the following statements regarding the steady - state error due to a step function input.

(1) Type system

(2) Type system

(3) Type system

(4) Type system

Which of the above statements are correct? (November paper 2)

Choices

Choice (4)Response

a.

(2) and (3)

b.

(1) and (3)

c.

(1) and (4)

d.

(1) and (2)

Edit

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 2 (1 of 2 Based on Passage)

Appeared in Year: 2018

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.

Edit

Question 3 (2 of 2 Based on Passage)

Appeared in Year: 2018

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

Edit

Question 4

Appeared in Year: 2018

Question MCQ▾

Which of the following is not correct in respect of a phase-lead compensation network? (December)

Choices

Choice (4)Response

a.

It increases gain at higher frequencies

b.

It is used when fast transient response is required

c.

It increases system bandwidth

d.

It is used when phase decreases rapidly near crossover frequency

Edit