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Process Control and Instrumentation

Process Control and Instrumentation
Transfer function of transportation lag is

None of these
ETS
E-TS
1/(TS + 1)

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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

Voltage
Current
Light intensity
Flux density

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Water
Carbon-tetrachloride
Methyl alcohal
Mercury

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is

Linear expansion
Pressure rise with temperature
None of these
Volumetric expansion

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Process Control and Instrumentation
__________ type of element is normally not used in the bimetallic thermometers.

Multiple helix
Flat spiral
Bourdon tube
Single helix

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Process Control and Instrumentation
Which of the following measurements can be made by the measurement of emf?

All of these
Composition of complex ions
PH value
Degree of hydrolysis

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