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Process Control and Instrumentation

Process Control and Instrumentation
Gas chromatography is used for the measurement of

Concentration
Temperature
Pressure
Flow rate

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Process Control and Instrumentation
Which of the following filled system expansion thermometer has the capability to measure the lowest temperature?

Mercury in steel thermometer
Mercury in glass thermometer
Fused metal (Na or K) in steel thermometer
Alcohol in glass thermometer

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Process Control and Instrumentation
Phase lag of the sinusoidal response of a first order system is

90°
180°
120°
30°

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Process Control and Instrumentation
Stroboscope is used for the measurement of

Depression of freezing point
Frequency of light
Rpm of a flywheel
Liquid level under pressure

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Process Control and Instrumentation
In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

Neither A nor B Here
Both A & B Here
Level
Outlet flow rate

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Process Control and Instrumentation
What is the Laplace transform of sin t ?

1/(s² + 1)
S/(s² + 1)
1/(s² - 1)
S/(s² - 1)

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