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Process Control and Instrumentation

Process Control and Instrumentation
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

Gage glass
None of these
Differential pressure gage
External float gage

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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
p/nRT
nRT/V
nRT/P

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Process Control and Instrumentation
What is the Laplace transform of impulse input having magnitude 'X' ?

X²
X
1/X
1

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Process Control and Instrumentation
Polarograph is meant for the analysis of

Solids
Isotopes
Miscible liquids
Gaseous mixture

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Process Control and Instrumentation
Stalagmometer is used for the measurement of

Surface tension
Refractive index
Optical activity
Kinematic viscosity

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Process Control and Instrumentation
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is

0.5
1
1/√2
0.25

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