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Process Control and Instrumentation

Process Control and Instrumentation
In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the __________ variable.

Load
Manipulated
None of these
Controlled

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Process Control and Instrumentation
A simple pitot tube measures the

Maximum velocity
Average velocity
Static pressure
Point velocity

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Process Control and Instrumentation
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.

Centigrade
Kelvin
Reaumer
Fahrenheit

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Process Control and Instrumentation
Transfer function of transportation lag is

None of these
E-TS
ETS
1/(TS + 1)

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Process Control and Instrumentation
Pirani gauge is used for the measurement of

Liquid level at atmospheric pressure
Very high pressure
High vacuum
Liquid level under pressure

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Process Control and Instrumentation
A negative gain margin expressed in decibels means a/an __________ system.

Critically damped
Unstable
Stable
None of these

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