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Process Control and Instrumentation

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

Square root
Parabolic
Linear
Exponential

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Water
Air
Steam
Oil

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Process Control and Instrumentation
Cascade control means

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

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Process Control and Instrumentation
Mcleoid gauge is used to measure the

Point velocity
Pressure
Flow rate
Vacuum

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Process Control and Instrumentation
Paramagnetism method is not used for the composition determination of __________ in gases.

Any of these
Carbon dioxide
Oxygen
Oxides of nitrogen

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Process Control and Instrumentation
Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant)

V/nRT
nRT/P
p/nRT
nRT/V

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