Control system interview questions | Instrumentation and Control Engineering

Welcome to your Quiz.

Control Systems Multiple Choice Questions and Answers:

it contains 25 questions

1.

The type 2 system has at the origin.

no net pole

net pole

simple pole

two poles

2.

The capacitance, in force-current analogy, is analogous to

momentum

displacement

velocity

mass

3.

Regenerative feedback implies feedback with

oscillations

step input

negative sign

positive sign

4.

is not a final control element

Control valve

Potentiometer

Electro-pneumatic converter

Servomotor

5.

Which of the following is the output of a thermocouple?

Alternating current

Direct current

A.C. voltage

D.C. voltage

6.

The type 1 system has ______ at the origin.

no pole

net pole

simple pole

two poles

7.

The type 0 system has ______ at the origin.

no pole

net pole

simple pole

two poles

8.

In thermal-electrical analogy charge is considered analogous to

heat flow

reciprocal of heat flow

reciprocal of temperature

temperature

9.

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

Error detector

Final control element

Sensor

Oscillator

10.

The first order control system, which is well designed, has a

small bandwidth

negative time constant

large negative transfer function pole

none of the above

11.

With feedback _____ increases

system stability

sensitivity

gain

effects of disturbing signals

12.

In liquid level and electrical system analogy, voltage is considered analogous to

head

liquid flow

liquid flow rate

None of the above

13.

The transient response of a system is mainly due to

inertia forces

internal forces

stored energy

friction

14.

Spring constant in force-voltage analogy is analogous to

capacitance

reciprocal of capacitance

current

resistance

15.

In closed loop control system, with a positive value of feedback gain, the overall gain of the system will

decrease

increase

be unaffected

any of the above

16.

Which of the following can be measured by the use of a tacho-generator?

Acceleration

Speed

Speed and acceleration

Displacement

17.

This technique is not applicable to the nonlinear system

Quasi linearization

Functional analysis

Nyquist Criterion

Phase-plane representation

18.

In an open loop control system

Output is independent of control input

Output is dependent on control input

Only system parameters have effect on the control output

None of the above

19.

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

20.

Which of the following statements is correct for a system with a 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

21.

A control system in which the control action is somehow dependent on the output is known as

Semiclosed loop system

Open system

Closed loop system

None of the above

22.

Which of the following is an open loop control system?

Ward leonard control

Field controlled D.C. motor

Metadyne

Stroboscope

23.

A controller, essentially, is a

sensor

clipper

comparator

amplifier

24.

In a stable control system, saturation can cause which of the following?

Low-level oscillations

High-level oscillations

Conditional stability

Overdamping

25.

In electrical-pneumatic system analogy the current is considered analogous to

velocity

air flow rate

pressure

air flow

Welcome to your Quiz.

Control Systems Multiple Choice Questions and Answers:

it contains 25 questions

The type 2 system has at the origin.

The capacitance, in force-current analogy, is analogous to

Regenerative feedback implies feedback with

is not a final control element

Which of the following is the output of a thermocouple?

The type 1 system has ______ at the origin.

The type 0 system has ______ at the origin.

In thermal-electrical analogy charge is considered analogous to

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

The first order control system, which is well designed, has a

With feedback _____ increases

In liquid level and electrical system analogy, voltage is considered analogous to

The transient response of a system is mainly due to

Spring constant in force-voltage analogy is analogous to

In closed loop control system, with a positive value of feedback gain, the overall gain of the system will

Which of the following can be measured by the use of a tacho-generator?

This technique is not applicable to the nonlinear system

In an open loop control system

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

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

A control system in which the control action is somehow dependent on the output is known as

Which of the following is an open loop control system?

A controller, essentially, is a

In a stable control system, saturation can cause which of the following?

In electrical-pneumatic system analogy the current is considered analogous to

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