Electrical control systems Archives - Page 2 of 10 - MCQ and Quiz for Exams

11. Which of the following is the definition of proportional band of a controller ?

The range of air output as measured variable varies from maximum to minimum

The range of measured variables from set value

The range of measured variables through which the air output changes from maximum to minimum

Any of the above E. None of the above

Detailed SolutionWhich of the following is the definition of proportional band of a controller ?

12. Regenerative feedback implies feedback with

oscillations

step input

negative sign

positive sign

Detailed SolutionRegenerative feedback implies feedback with

13. A closed loop system is distinguished from open loop system by which of the following ?

Servomechanism

Feedback

Output pattern

Input pattern

Detailed SolutionA closed loop system is distinguished from open loop system by which of the following ?

14. Any externally introduced signal affecting the controlled output is called a

feedback

stimulus

signal

gain control

Detailed SolutionAny externally introduced signal affecting the controlled output is called a

15. Which of the following devices is used for conversion of co-ordinates ?

Microsyn

Selsyn

Synchro-resolver

Synchro-transformer

Detailed SolutionWhich of the following devices is used for conversion of co-ordinates ?

16. Directly converts temperature into voltage.

Thermocouple

Potentiometer

Gear train

LVDT E. None of the above

Detailed SolutionDirectly converts temperature into voltage.

17. 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

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

18. The transfer function is applicable to which of the following ?

Linear and time-in variant systems

Linear and time-variant systems

Linear systems

Non-linear systems E. None of the above

Detailed SolutionThe transfer function is applicable to which of the following ?

19. The transient response of a system is mainly due to

inertia forces

internal forces

stored energy

friction

Detailed SolutionThe transient response of a system is mainly due to

20. The initial response when tne output is not equal to input is called

Transient response

Error response

Dynamic response

Either of the above

Detailed SolutionThe initial response when tne output is not equal to input is called

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