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Control Systems - Interview Questions and Answers

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66. Which of the following devices is used for conversion of co-ordinates ?
A. Microsyn
B. Selsyn
C. Synchro-resolver
D. Synchro-transformer
Explanation:
67. A control system in which the control action is somehow dependent on the output is known as
A. Closed loop system
B. Semiclosed loop system
C. Open system
D. None of the above
Explanation:
68. Pressure error can be measured by which of the following ?
A. Differential bellows and straingauge
B. Selsyn
C. Strain gauge
D. Strain gauge and potentiometer
Explanation:
69. In a control system integral error compensation _______ steady state error
A. increases
B. minimizes
C. does not have any effect on
D. any of the above
Explanation:
70. Which of the following is the definition of proportional band of a controller ?
A. The range of air output as measured variable varies from maximum to minimum
B. The range of measured variables from set value
C. The range of measured variables through which the air output chan�ges from maximum to minimum
D. Any of the above
Explanation:
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