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Process Control and Instrumentation

Process Control and Instrumentation
The term analogous to the electrical current in a thermal system is the

Heat content in the system
Temperature difference
Heat flow rate
None of these

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Process Control and Instrumentation
Concentration of sugar solution can be determined by the

Oscillometry
Emission spectroscopy
Polarimetry
Flame photometry

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Process Control and Instrumentation
Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an

Hot wire anemometer
Orificemeter
Magnetic flow meter
Venturimeter

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Process Control and Instrumentation
Which is the most suitable instrument for measuring pressure below 3 microns?

Mcleoid gauge
Alphatron
Bourdon guage
Ionisation gauge

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Process Control and Instrumentation
Maximum differential pressure in liquid manometer is __________ psi.

20
50
30
40

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Process Control and Instrumentation
A sinusoidal variation in the input passing through a linear first order system

Becomes more oscillatory (frequency increases)
Becomes less oscillatory (frequency decreases)
Gets attenuated (magnitude decreases)
Gets amplified (magnitude increases)

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