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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following is not a mechanical pressure sensing element?

Bourdon tube
Bellows
Diaphragm
U-tube

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc/τD s
Kc(1+τD s)
Kc(1 +1/τD s)
Kc τD s

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Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

None of these
Solids
Isotopes
Alloys

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

Lead
30% iron + 70% nickel
Copper
Nickel

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Process Control and Instrumentation
Process degree of freedom indicates __________ number of controllers to be used.

Both maximum and the minimum
The minimum
Nothing about the
The maximum

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Process Control and Instrumentation
Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is

Either A, B or C
Iron-constantan
Platinum-platinum+rhodium
Chromel-alumel

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