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Process Control and Instrumentation

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

First order system
Second order system
Transportation lag
None of these

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

2nd
3rd
Zero
1st

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Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

-1
43838
1
44020

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

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Process Control and Instrumentation
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

100
95
63.2
87.5

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

Ordinary
Triangular
Semi-log
Log-log

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