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Process Control and Instrumentation

Process Control and Instrumentation
Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Neither A nor B Here
Melting
Both A & B Here
Boiling

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Process Control and Instrumentation
Polarograph is meant for the analysis of

Isotopes
Gaseous mixture
Solids
Miscible liquids

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Process Control and Instrumentation
Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

0.001
0.01
0.0001
0.1

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a secondary element.

Pointer
None ofthese
Bourdon tube
Bulb

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Process Control and Instrumentation
The thermal emf-temperature relationship of most thermocouples is

Parabolic
Linear
Exponential
Square root

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Process Control and Instrumentation
Which of the following controllers has maximum offset?

P-I-D controller
P-controller
P-I controller
P-D controller

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