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Process Control and Instrumentation

Process Control and Instrumentation
Smoke density of the flue gas going out of the chimney is measured by a

Thermal conductivity meter
Photo electric cell
Chromatograph
Polarograph

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

Volumetric expansion
Differential linear expansion
Increase of pressure
Increase of thermal conductivity

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Process Control and Instrumentation
What is the Laplace transform of impulse input having magnitude 'X' ?

X
1/X
1
X²

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Process Control and Instrumentation
Which of the systems having following transfer functions is stable?

1/(s² + 2s + 2)
Exp(-20s)/(s² + 2s-l)
1/(s²+ 2)
1/(s²-2s + 3)

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

Refractrometer
Polarograph
Polarimeter
Spectrometer

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Process Control and Instrumentation
Hot wire anemometer is used for the measurement of

Flow rates of fluids
Thermal conductivity of gases
Flow rates of granular solids
Very high temperature

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MORE MCQ ON Process Control and Instrumentation

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