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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following is never used as an element of industrial resistance thermometer?

Nickel
Copper
Lead
30% iron + 70% nickel

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Positive
Very high
Sub-atmospheric
Atmospheric

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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

Solid semi-conductor
Liquid semi-conductor
Conductor
Insulator

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Process Control and Instrumentation
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

95
100
87.5
63.2

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Process Control and Instrumentation
A barometer measures the __________ pressure.

Absolute as well as gauge
Gauge
Dynamic
Absolute

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Process Control and Instrumentation
The amplitude ratio for the sinusoidal response of a __________ is 1.

Transportation lag
None of these
Second order system
First order system

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