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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following is a 'contact' pyrometer?

Radiation pyrometer
Infra red pyrometer
Resistance pyrometer
Optical pyrometer

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

Differential linear expansion
Increase of pressure
Increase of thermal conductivity
Volumetric expansion

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Process Control and Instrumentation
__________ is an example of distributed parameter system

None of these
CSTR
On-off controller
Tubular reactor

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Process Control and Instrumentation
Bourdon tube is never made of

Stainless steel
Cast iron
Monel metal
Phosphor bronze

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Process Control and Instrumentation
A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature.

None of these
Hydrogen
Helium
Nitrogen

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Process Control and Instrumentation
Volumetric expansion is the working principle of the __________ thermometers.

Vapor pressure
Mercury in glass
Constant volume gas
Bimetallic

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