1) A good control system should be sensitive to __________
a. Internal disturbances
b. Environmental parameters
c. Parametric variations
d. Input signals (except noise)
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Answer
Explanation
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ANSWER: Input signals (except noise)
Explanation:
No explanation is available for this question!
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2) Which among the following controls the speed of D.C. motor?
a. Galvanometer
b. Gauss meter
c. Potentiometer
d. Tachometer
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Answer
Explanation
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ANSWER: Tachometer
Explanation:
No explanation is available for this question!
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3) What should be the nature of bandwidth for a good control system?
a. Large
b. Small
c. Medium
d. All of the above
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Answer
Explanation
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ANSWER: Large
Explanation:
No explanation is available for this question!
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4) Which system exhibits the initiation of corrective action only after the output gets affected?
a. Feed forward
b. Feedback
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: Feedback
Explanation:
No explanation is available for this question!
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5) What is the value of steady state error in closed loop control systems?
a. Zero
b. Unity
c. Infinity
d. Unpredictable
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Answer
Explanation
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ANSWER: Zero
Explanation:
No explanation is available for this question!
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6) Into which energy signal does the position sensor convert the measured position of servomotor in servomechanisms?
a. Mechanical
b. Electrical
c. Thermal
d. Light
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Answer
Explanation
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ANSWER: Electrical
Explanation:
No explanation is available for this question!
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7) Which among the following represents an illustration of closed loop system?
a. Automatic washing machine
b. Automatic electric iron
c. Bread toaster
d. Electric hand drier
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Answer
Explanation
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ANSWER: Automatic electric iron
Explanation:
No explanation is available for this question!
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8) Which notation represents the feedback path in closed loop system representation?
a. b(t)
b. c(t)
c. e(t)
d. r(t)
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Answer
Explanation
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ANSWER: b(t)
Explanation:
No explanation is available for this question!
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9) Which among the following is not an advantage of an open loop system?
a. Simplicity in construction & design
b. Easy maintenance
c. Rare problems of stability
d. Requirement of system recalibration from time to time
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Answer
Explanation
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ANSWER: Requirement of system recalibration from time to time
Explanation:
No explanation is available for this question!
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10) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output?
a. Input signal
b. Output signal
c. Error signal
d. Feedback signal
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Answer
Explanation
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ANSWER: Input signal
Explanation:
No explanation is available for this question!
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