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Process Control and Instrumentation

Process Control and Instrumentation
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system?

1
< 1
None of these
>1

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Process Control and Instrumentation
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Vapor pressure thermometer
Reistance thermometer
Mercury in glass thermometer
Thermocouple

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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?

Peltier effect
None of these
Thomson effect
Seebeck effect

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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
50
10

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Process Control and Instrumentation
Which of the following is not a composition measuring instrument?

Hot wire anemometer
Thermal conductivity cell
Mass spectrometer
Polarograph

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Process Control and Instrumentation
Bimetal strips are not used in

Thermocouples
Relays for opening & closing of electrical circuits
Thermostats
Bimetallic thermometers

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