Assertion (A): Potentiometers can not be used as error detectors in position con

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Question
Assertion (A): Potentiometers can not be used as error detectors in position control systems.
Reason (R): The resolution of a potentiometer places an upper limit on its accuracy
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct but R is wrong
D. R is correct but A is wrong

Correct Answer

R is correct but A is wrong

Explanation

Potentiometers are used as error detectors.

Automatic Control Systems problems

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1. From the noise point of view, bandwidth should
Options
A. be large
B. not be too large
C. should be as large as possible
D. should be infinite

2. The compensator of the given figure is a
Options
A. lag compensator
B. lead compensator
C. lag-lead compensator
D. none of the above

5. The system in the given figure, has
Options
A. good gain and phase margin
B. poor gain and phase margin
C. good gain margin but poor phase margin
D. poor gain margin but good phase margin

7. A negative feedback system has . The closed loop system is stable for
Options
A. K > 20
B. 15 < K < 19
C. 8 ? K ? 14
D. K < 6

9. Stepper motors find applications in
Options
A. X-Y plotters
B. numerically controlled machining equipment
C. printers
D. all of the above

10. The log magnitude curve for a constant gain K is a
Options
A. horizontal straight line
B. horizontal straight line of magnitude 20 log K decibels
C. an inclined line having slope K
D. an inclined line having slope -K

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