Pneumatic Control System Multiple Choice Questions and Answers
36. In pneumatic systems time lags are obtained by
A. Pneumatic-electric elements
B. Making the air to fill a volume after passing through a restriction
C. Elongating the path of air
D. Any of the above
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B. Making the air to fill a volume after passing through a restriction
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37. In pneumatic control systems compensation is provided by which of the following ?
A. Bimetal strips
B. Extension tubes
C. Flapper nozzle mechanism
D. Restriction volume combinations
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38. The compressed air, in pneumatic control systems, is not
A. Lubricated
B. Filtered
C. Regulated
D. All of the above
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39. In pneumatic control systems the control panel used as final control element converts
A. Pressure signal to electric signal
B. Pressure signal to position change
C. Electric signals to be sure signal
D. Position change to pressure signal
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40. A pneumatic amplifier
A. Amplifiers flow
B. Amplifiers differential pressure
C. Amplifiers change in air volume
D. Any of the above
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