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Process Control and Instrumentation

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)

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

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Process Control and Instrumentation
Stalagmometer is used for the measurement of

Surface tension
Kinematic viscosity
Optical activity
Refractive index

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Process Control and Instrumentation
Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Boiling
Both A & B Here
Neither A nor B Here
Melting

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Process Control and Instrumentation
Mercury thermometer can be used to measure the temperature upto __________ °C.

350
100
750
250

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Process Control and Instrumentation
Working principle of disappearing filament type optical pyrometer is based on the

Kirchoff's law
Wien's law
Peltier effect
Seebeck effect

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Process Control and Instrumentation
Which of the following is not a variable area flow meter?

Piston type meter
Magnetic flow meter
Rotameter
Orifice and tapered plug meter

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