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Process Control and Instrumentation

Process Control and Instrumentation
Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³.

10
50
1
100

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Process Control and Instrumentation
Zirconia probe is used for the measurement of

Speed of a submarine
% O₂ in flue gas
% CO₂ in flue gas
Humidity of air

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Process Control and Instrumentation
An aneroid barometer measures the __________ pressure.

Absolute
Vacuum
Gage
Atmospheric

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Process Control and Instrumentation
Bode diagram is a plot of

AR vs. log (f) and Φ vs. log (f)
Log (AR) vs. f and log Φ vs.f
Log (AR) vs. log (f) and (Φ) vs. log (f)
None of these

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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

Flux density
Current
Voltage
Light intensity

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

4
8
0.2
1.5

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