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Process Control and Instrumentation

Process Control and Instrumentation
Characteristic equation is the denominator of __________ loop transfer function.

Closed
Both A & B Here
Neither A Nor B Here
Open

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Process Control and Instrumentation
The pressure sensing element of elastic type pressure gauge is never made in the form of a

Diaphragm
Bourdon tube
Bellow
Strip

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Process Control and Instrumentation
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with

Mercury
Air
Oil
A metal powder or graphite

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Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Seebeck effect
Stafan-Boltzman law
Kirchoffs law
Wien's law

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

Stroboscope
All of these
Tachometer
Psychrometer

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Process Control and Instrumentation
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

1000
500
250
750

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