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Process Control and Instrumentation

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

Isotopes
Alloys
Solids
None of these

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 1
< 3
> 3
< 0.1

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Process Control and Instrumentation
Optical activity of a solution can be determined using a

Polarograph
Polarimeter
Dilatometer
Refractrometer

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Process Control and Instrumentation
Phase lag of the frequency response of a second order system to a sinusoidal forcing function

Is 120°
Is 90° at the most
Approaches 180° asymptotically
Is 30°

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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)

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

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Process Control and Instrumentation
Bourdon tube is never made of

Phosphor bronze
Stainless steel
Monel metal
Cast iron

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