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Process Control and Instrumentation

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

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

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

Bourdon tube
None ofthese
Pointer
Bulb

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Process Control and Instrumentation
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

Liquid semi-conductor
Insulator
Solid semi-conductor
Conductor

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Process Control and Instrumentation
Cascade control means

One feed-back loop
Feed forward control
On-off control
More than one feed-back loop

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Process Control and Instrumentation
A simple pitot tube measures the

Point velocity
Maximum velocity
Static pressure
Average velocity

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

None of these
Helium
Nitrogen
Hydrogen

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