Electrical Control Systems MCQ Questions & Answers

1

The position and velocity errors of a type-2 system are

A) constant, constant B) constant, infinity C) zero, constant D) zero, zero

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Answer & Solution

Answer: Option C

Solution:

The position and velocity error of the type 2 system is zero and a constant value as for type 2 system velocity error is finite while acceleration error is infinite.

2

With feed back _____ reduces.

A) system stability B) system gain C) system stability and gain D) none of the above

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Answer & Solution

Answer: Option B

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3

Is a closed loop system.

A) Auto-pilot for an aircraft B) Direct current generator C) Car starter D) Electric switch

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Answer & Solution

Answer: Option A

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4

The effect of error damping is to

A) provide larger settling lime B) delay the response C) reduce steady state error D) any of the above E) none of the above

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Answer & Solution

Answer: Option C

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5

The band width, in a feedback amplifier.

A) remains unaffected B) decreases by the same amount as the gain increase C) increases by the sane saaaajajt as the gain decrease D) decreases by the same amount as the gain decrease

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Answer & Solution

Answer: Option C

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6

In an open loop control system

A) Output is independent of control input B) Output is dependent on control input C) Only system parameters have effect on the control output D) None of the above

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Answer & Solution

Answer: Option A

Solution:

An open-loop system is defined by the fact that the output signal or condition is neither measured nor fed back for comparison with the input signal or system set point. Therefore open-loop systems are commonly referred to as “Non-feedback systems”.

7

Due to which of the following reasons excessive bond width in control systems should be avoided ?

A) It leads to slow speed of response B) It leads to low relative stability C) Noise is proportional to band width D) None of the above

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Answer & Solution

Answer: Option C

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8

Hydraulic torque transmission system is analog of

A) amplidyne set B) resistance-capacitance parallel circuit C) motor-generator set D) any of the above

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Answer & Solution

Answer: Option C

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9

If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

A) not necessarily stable B) stable C) unstable D) always unstable E) any of the above

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Answer & Solution

Answer: Option A

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10

On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?

A) Frequency B) Loop gain C) Forward gain D) All of the above

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Answer & Solution

Answer: Option D

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Electrical Control Systems MCQ Questions & Answers | Electrical Engineering