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Process Control and Instrumentation

Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Contact-type electric indicators
Displacement meter
Both A and C
Hydrometer

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

U-tube manometer
Inclined tube manometer
Pirani guage
Bourdon gauge

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Process Control and Instrumentation
In an exothermic chemical reactor, the manipulated variable is the flow rate of

Product
None of these
Reactants
Coolant

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Semi-log
Ordinary
Log-log
Triangular

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Process Control and Instrumentation
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability?

Nitrogen in steel thermometer
Mercury in glass thermometer
Alcohol in glass thermometer
Fused metal (Na or K) in steel thermometer

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Process Control and Instrumentation
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing

Hydrogen
None of these
Nitrogen
Helium

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