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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following is not a speed measuring instrument?

All of these
Stroboscope
Psychrometer
Tachometer

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Process Control and Instrumentation
Dead zone is the

Maximum change in the variable that does not change the reading of the instrument
Same as time constant
Same as transportation lag
None of these

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Process Control and Instrumentation
The amplitude ratio for the sinusoidal response of a __________ is 1.

None of these
First order system
Transportation lag
Second order system

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc(1+τD s)
Kc/τD s
Kc τD s
Kc(1 +1/τD s)

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Process Control and Instrumentation
Flow rate of sludge is not measured by a/an

Kennison nozzle
Orificemeter
Open weir
Both B & C

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Ordinary
Log-log
Semi-log
Triangular

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