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Process Control and Instrumentation

Process Control and Instrumentation
Phase lag of the frequency response of a second order system to a sinusoidal forcing function

Is 30°
Is 120°
Approaches 180° asymptotically
Is 90° at the most

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Process Control and Instrumentation
Psychrometer determines the

Hygroscopic nature of solids
Moisture content of solids
Water of crystallisation
Humidity of gases

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Process Control and Instrumentation
Platinum resistance thermometer is the international standard for temperature measurement between

Triple point of hydrogen and freezing point of antimony
13.81°K to 903.9°K
Both A and B
Neither A nor B

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Process Control and Instrumentation
Change of angle of refraction with composition comprises the working principle of a

Refractrometer
Polarograph
Spectrometer
Polarimeter

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Process Control and Instrumentation
Which of the following fluid flow measuring devices can measure the largest flow rate?

Weir
Rotameter
V-notch
Orificemeter

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Process Control and Instrumentation
Which of the following is not a differential pressure flow meter?

Venturimeter
Rotameter
Flow nozzle
Orificemeter

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