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Process Control and Instrumentation

Process Control and Instrumentation
Measurement of pressure in ammonia reactor is done by

U-tube manometer
Bourdon gauge
Inclined tube manometer
Pirani guage

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Process Control and Instrumentation
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 - et
1 + e-t
1 - e-t
1 + et

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Process Control and Instrumentation
__________ thermometer can not measure sub-zero (< 0° C) temperature,

Bimetallic
Resistance
Vapor pressure
Mercury in glass

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Process Control and Instrumentation
The level of a liquid under pressure can be determined using

Differential pressure manometer
Bubbler system
Diaphragm box system
Air-trap system

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Process Control and Instrumentation
Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

0.1
0.0001
0.001
0.01

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Process Control and Instrumentation
Reset rate is the another term used for __________ time.

Derivative
Integral
None of these
Dead

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