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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.

1
100
10
50

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

75
100
25

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Process Control and Instrumentation
Emission spectroscopy is used for

Solids and metal analysis
Determining water purity
Determination of CO₂ in gases
NOxdetermination

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Process Control and Instrumentation
The response of two tanks of same size and resistance in series is

Under damped
Over damped
Critically damped
None of these

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Process Control and Instrumentation
Radiation thermometer can not measure the temperature

Inside a pressure vessel
Of an object without coming in contact with it
Of moving objects at high temperature
Of liquid oxygen

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Process Control and Instrumentation
Bode diagram is a plot of

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

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