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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following judges the accuracy of an instrument?

Dead zone
None of these
Static error
Drift

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Process Control and Instrumentation
Which of the following is not a speed measuring instrument?

Stroboscope
Psychrometer
Tachometer
All of these

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Process Control and Instrumentation
Liquid flow rate in a small channel is best measured by a/an

Weir
Pitot tube
Vane meter
Venturimeter

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Process Control and Instrumentation
The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.

Pressure
Volume
Viscosity
All of these

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Process Control and Instrumentation
For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a

Large area but small mass
High thermal conductivity
All of these
Small specific heat

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Process Control and Instrumentation
Pirani gauge is used for the measurement of

Very high pressure
Liquid level at atmospheric pressure
High vacuum
Liquid level under pressure

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