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Process Control and Instrumentation

Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1/(S² + 1)
1
1/S²
1/S

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Process Control and Instrumentation
Which of the following judges the accuracy of an instrument?

None of these
Drift
Dead zone
Static error

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

Increase of thermal conductivity
Differential linear expansion
Volumetric expansion
Increase of pressure

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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

Current
Flux density
Voltage
Light intensity

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Process Control and Instrumentation
Silver point temperature is __________ °C.

860.5
1060.5
960.5
760.5

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Process Control and Instrumentation
Liquid discharge from a tank or reservoir can not be measured by

Mouthpieces
Notches
Weirs
Orificemeters

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