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Process Control and Instrumentation

Process Control and Instrumentation
In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable.

Manipulated
Controlled
None of these
Load

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Process Control and Instrumentation
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.

- 10 and 425
- 79 and 395
- 39 and 350
- 51 and 439

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

Mouthpieces
Notches
Orificemeters
Weirs

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Process Control and Instrumentation
Which of the following can not measure a temperature of 1600°C ?

Radiation pyrometer
Photo-electric pyrometer
Platinum resistance thermometer
Thermocouple

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Process Control and Instrumentation
Flame photometry is used for the determination of compositional analysis of

Solids
Isotopes
Natural gas
Alkali metals

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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?

Thomson effect
Seebeck effect
None of these
Peltier effect

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