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Process Control and Instrumentation

Process Control and Instrumentation
Stroboscope is used for the measurement of

Frequency of light
Rpm of a flywheel
Depression of freezing point
Liquid level under pressure

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Process Control and Instrumentation
Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is

Paraffin
Water
Ethylene glycol
Carbon tetrachloride

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Process Control and Instrumentation
A non-linear system will have __________ steady state values.

Two
One
Three
More than one

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Process Control and Instrumentation
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system?

None of these
>1
1
< 1

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Process Control and Instrumentation
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

Mercury thermometer
Beckman thermometer
Dilatometer
Bimetallic thermometer

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 0.1
> 3
< 1
< 3

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