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Process Control and Instrumentation

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

750
250
500
1000

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

100
75
25

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Process Control and Instrumentation
Dilatometer is used to measure

Stress
Deflection
Contraction/expansion due to changes in temperature
Strain

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

None of these
Nyquist
Ruth
Mikhalov

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Process Control and Instrumentation
On-off controllers are normally used for

Flow rate changes
Low loads
Temperature changes
None of these

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Process Control and Instrumentation
Which is the strongest paramagnetic gas?

NO₂
NO
CO₂
O₂

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