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Process Control and Instrumentation

Process Control and Instrumentation
Feed forward controller accounts for the __________ changes.

Neither A nor B
Set point
Load
Both A & B

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Process Control and Instrumentation
Emf generated in a thermocouple depends on the temperature

Of hot junction only
Difference between hot and cold junctions
Difference between cold junction and atmospheric temperature
Of cold junction only

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Process Control and Instrumentation
Temperature measurement by optical pyrometer is done above __________ point, which is 1063°C.

Antimony
Nickel
Silver
Gold

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Process Control and Instrumentation
A simple pitot tube measures the

Point velocity
Maximum velocity
Average velocity
Static pressure

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Process Control and Instrumentation
According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is

0°
45°
90°
180°

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

Dilatometer
Polarograph
Polarimeter
Refractrometer

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