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Process Control and Instrumentation

Process Control and Instrumentation
Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called

Dielectrics
Semi conductors
Conductors
Insulators

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

Differential float type manometer
Simple float
Glass gauge
None of these

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Process Control and Instrumentation
An aneroid barometer measures the __________ pressure.

Vacuum
Atmospheric
Absolute
Gage

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Process Control and Instrumentation
__________ stability method uses open loop transfer function.

None of these
Ruth
Mikhalov
Nyquist

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 3
< 0.1
> 3
< 1

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Process Control and Instrumentation
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.

- 51 and 439
- 10 and 425
- 39 and 350
- 79 and 395

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