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Process Control and Instrumentation

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

Bimetallic thermometer
Beckman thermometer
Dilatometer
Mercury thermometer

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Process Control and Instrumentation
Degree to which an instrument indicates the changes in measured variable without dynamic error is called its

Speed of response
Reproducibility
Fidielity
Static characteristics

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Process Control and Instrumentation
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.

Photoelectric
Optical
None of these
Radiation

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

Hydrogen
Helium
Nitrogen
None of these

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Process Control and Instrumentation
When the damping co-efficient (ξ) is unity, the system is

Overdamped
Highly fluctuating
Underdamped
Critically damped

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

1000
250
750
500

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