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Process Control and Instrumentation

Process Control and Instrumentation
Number of poles in a system with transfer function 1/(s² + 2s² + 1) is

5
3
2
1

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Process Control and Instrumentation
Photoelectric pyrometers are suitable in the temperature range of __________ °C.

400-1600
800-2500
800-1600
400-1000

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

None of these
Differential float type manometer
Glass gauge
Simple float

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Process Control and Instrumentation
Non-metallic diaphragm used as pressure sensor in instruments is generally made of

Thick paper
Teflon
Synthetic rubber
Bakelite

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Process Control and Instrumentation
Pick out the first order system from among the following.

Mercury in glass thermometer kept in boiling water
Interacting system of two tanks in series
Damped vibrator
Non-interacting system of two tanks in series

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Process Control and Instrumentation
Mercury manometer (U-tube type) exemplifies a __________ order system.

First
Second
Zero
Third

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