Control Systems Mcqs

This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “ Control Systems ”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Control Systems comprehensively.

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31.
increases the steady state accuracy?

Integrator

Differentiator

Phase lead compensator

Phase lag compensator

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32.
The second derivative input signals modify which of the following ?

The time constant of the system

Damping of the system

The gain of the system

The time constant and suppress the oscillations

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33.
Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?

The system is relatively stable

The system is highly stable

The system is highly oscillatory

None of the above

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34.
The transient response, with feedback system_____________?

Rises slowly

Rises quickly

Decays slowly

Decays quickly

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35.
Which of the following statements is correct for any closed loop system ?

All the co-efficients can have zero value

All the co-efficients are always non-zero

Only one of the static error co-efficients has a finite non-zero value

None of the above

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37.
In a stable control system backlash can cause which of the following ?

Underdamping

Overdamping

Poor stability at reduced values of open loop gain

Low-level oscillations

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38.
In a control system the output of the controller is given to_____________?

Final control element

Amplifier

Comparator

Sensor

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39.
Due to which of the following reasons excessive bond width in control systems should be avoided ?

It leads to slow speed of response

It leads to low relative stability

Noise is proportional to band width

None of the above

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40.
In an automatic control system which of the following elements is not used ?

Error detector

Final control element

Sensor

Oscillator

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41.
The capacitance, in force-current analogy, is analogous to_____________?

Momentum

Velocity

Displacement

Mass

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42.
Mass, in force-voltage analogy, is analogous to________________?

Charge

Current

Inductance

Resistance

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43.
The viscous friction co-efficient, in force-voltage analogy, is analogous to______________?

Charge

Resistance

Reciprocal of inductance

Reciprocal of conductance

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44.
In thermal-electrical analogy charge is considered analogous to_______________?

Heat flow

Reciprocal of heat flow

Reciprocal of temperature

Temperature

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45.
In liquid level and electrical system analogy, voltage is considered analogous to_____________?

Head

Liquid flow

Liquid flow rate

None of the above

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