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Process Control and Instrumentation

Process Control and Instrumentation
Mcleoid gauge is used to measure the

Point velocity
Pressure
Flow rate
Vacuum

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Sub-atmospheric
Very high
Atmospheric
Positive

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Process Control and Instrumentation
Presence of a small amount of water in the organic systems can be determined by the __________ method.

Dielectric constant end loss factor
Emission spectroscopy
Polarimetry
Electrical conductivity

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

100
25
75

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Process Control and Instrumentation
Typical specifications for design stipulates the gain margin and phase margin to be respectively

< 1.7 and < 30°
> 1.7 and > 30°
< 1.7 and > 30°
> 1.7 and < 30°

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Process Control and Instrumentation
Which of the following is not a second order instrument?

Mercury in glass thermometer with covering
None of these
Bare mercury in glass thermometer
Pressure gauge with one bellow, two tubes and a tank

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