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Process Control and Instrumentation

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

Oxygen
Oxides of nitrogen
Any of these
Carbon dioxide

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Process Control and Instrumentation
In second order underdamped system,

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

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Process Control and Instrumentation
A simple pitot tube measures the

Point velocity
Static pressure
Average velocity
Maximum velocity

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Process Control and Instrumentation
pH meter has

Two cells
Three cells
No cell
One cell

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Process Control and Instrumentation
Flow rate through an orifice is __________ the pressure differential.

Proportional to the square root of
Inversely proportional to the square of
Inversely proportional to the square root of
Proportional to

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Process Control and Instrumentation
A typical example of a physical system with under damped characteristic is a

CSTR with first order reaction
Thermocouple kept immersed in a liquid filled thermowell
Spring loaded diaphragm valve
U-tube manometer

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