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Process Control and Instrumentation

Process Control and Instrumentation
A non-linear chemical system is exemplified by a/an

Mixer
None of these
Isothermal CSTR
Non-isothermal CSTR

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Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Both A and C
Hydrometer
Contact-type electric indicators
Displacement meter

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Air
Steam
Oil
Water

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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
Peltier
None of these
Thomson

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Process Control and Instrumentation
Gain margin is equal to the

Reciprocal of amplitude ratio
Amplitude ratio
Gain in P controller
Gain in P-I controller

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Process Control and Instrumentation
Cascade control means

Feed forward control
One feed-back loop
More than one feed-back loop
On-off control

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