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Process Control and Instrumentation

Process Control and Instrumentation
Composition of natural gas is determined by the

Haldane apparatus
Mass spectrometer
Both B and C
Chromatograph

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Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

-1
1
∞

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Process Control and Instrumentation
Reset rate is the another term used for __________ time.

None of these
Dead
Derivative
Integral

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Process Control and Instrumentation
In second order underdamped system,

Decay ratio = (overshoot)²
Overshoot increases for increasing damping co-efficient
Decay ratio = overshoot
Large damping co-efficient means smaller damping

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Process Control and Instrumentation
The pressure sensing element of elastic type pressure gauge is never made in the form of a

Diaphragm
Strip
Bourdon tube
Bellow

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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
p/nRT
V/nRT
nRT/P

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