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Process Control and Instrumentation

Process Control and Instrumentation
When the damping co-efficient (ξ) is unity, the system is

Critically damped
Highly fluctuating
Overdamped
Underdamped

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Process Control and Instrumentation
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.

Optical
Photoelectric
None of these
Radiation

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Process Control and Instrumentation
In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is

G/(1 + H)
G/H
H/G
H(1 + G)

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Process Control and Instrumentation
Mcleoid gauge is used to measure the

Pressure
Flow rate
Point velocity
Vacuum

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Process Control and Instrumentation
Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.

Seebeck
Thomson
Peltier
None of these

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Process Control and Instrumentation
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

None of these
Manipulated
Load
Controlled

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