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Process Control and Instrumentation

Process Control and Instrumentation
Specific gravity of a liquid can not be measured by a/an

Hydrometer
Specific gravity bottle
Anemometer
Pycnometer

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Process Control and Instrumentation
__________ controller has the maximum stabilising time.

PI
P
PD
PID

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Process Control and Instrumentation
A system with a double pole at the origin is unstable since the corresponding term in the time domain

Grows exponentially with time
Is a constant
Decays linearly with time
Grows linearly with time

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Process Control and Instrumentation
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

4/s³
2/s²
2/s³
4/s²

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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

44020
43838
-1
1

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Process Control and Instrumentation
Instrumentation in a plant offers the advantage of

All of these
Greater operation economy
Better quality of product
Greater safety of operation

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MORE MCQ ON Process Control and Instrumentation

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