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Process Control and Instrumentation

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

Load
Set point
Both A & B
Neither A nor B

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Process Control and Instrumentation
Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is

12
68
36
54

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Process Control and Instrumentation
Which of the following thermocouples can measure the maximum temperature?

Tungsten-molybdenum
Iron-constantan
Chromel-alumel
Platinum-rhodium

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Process Control and Instrumentation
A non-linear system will have __________ steady state values.

Three
More than one
One
Two

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Process Control and Instrumentation
Dead zone in an instrument must be less than __________ percent of the scale.

1.5
8
4
0.2

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Process Control and Instrumentation
The second order system with the transfer function 4/(S² + 2S + 4) has a damping ratio of

2.0
0.5
4.0
1.0

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