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Process Control and Instrumentation

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

4
0.2
1.5
8

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Process Control and Instrumentation
Continuous measurement of moisture content of paper in paper industry is done by measuring the

None of these
Electrical resistance through the paper
Thermal conductivity through the paper
Magnetic susceptibility

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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

36
12
68
54

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Process Control and Instrumentation
What is the Laplace transform of sin t ?

S/(s² - 1)
1/(s² - 1)
1/(s² + 1)
S/(s² + 1)

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Process Control and Instrumentation
Which of the following is not a differential pressure flow meter?

Venturimeter
Rotameter
Flow nozzle
Orificemeter

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Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

(time)⁻¹
Time
None of these
Velocity

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