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Process Control and Instrumentation

Process Control and Instrumentation
For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

Sum
Product
Ratio
Difference

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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
Mercury thermometer can be used to measure the temperature upto __________ °C.

250
350
750
100

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Process Control and Instrumentation
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.

Oxygen in
Temperature of
Carbon dioxide in
Carbon monoxide in

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Process Control and Instrumentation
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same

Speed of response
Temperature measuring range (- 40°C to 450°C)
Accuracy (± 1% of span)
All of these

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Process Control and Instrumentation
The open loop transfer function of a control system is KR/(1 + TS) . This represents

Dead time system
A first order system
A first order time lag
A second order system

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