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Process Control and Instrumentation

Process Control and Instrumentation
In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

Outlet flow rate
Level
Both A & B Here
Neither A nor B Here

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Process Control and Instrumentation
Characteristic equation is the denominator of __________ loop transfer function.

Open
Neither A Nor B Here
Both A & B Here
Closed

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

0.2
1.5
8
4

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Process Control and Instrumentation
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?

None of these
Peltier effect
Thomson effect
Seebeck effect

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Process Control and Instrumentation
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in

Light intensity
Voltage
Current
Flux density

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Process Control and Instrumentation
Which of the following thermocouples has the least temperature measurement range?

Iron-constantan
Chromel-alumel
Copper-constantan
Platinum-platinum/rhodium

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