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Process Control and Instrumentation

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

Load
Set point
Neither A nor B
Both A & B

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Process Control and Instrumentation
In a single tank system, the transfer function of level to inlet flow rate is

L(TS + l)
1/TS
R/TS
R/(TS + 1)

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Process Control and Instrumentation
A system with transfer function (2S/4S) + 1 is of __________ order.

1st
3rd
2nd
Zero

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Process Control and Instrumentation
Thermistors are used in __________ devices.

Voltage measuring
Temperature measuring
Temperature compensating
Both B & C

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Process Control and Instrumentation
Turbine flow meters are suitable for

Aerospace and in air borne applications
Both B and C
Very limited flow ranges
Cryogenic flow measurements

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Process Control and Instrumentation
Phase lag of the frequency response of a second order system to a sinusoidal forcing function

Is 90° at the most
Approaches 180° asymptotically
Is 120°
Is 30°

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