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Process Control and Instrumentation

Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a secondary element.

Pointer
Bourdon tube
Bulb
None ofthese

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Process Control and Instrumentation
In an exothermic chemical reactor, the manipulated variable is the flow rate of

Reactants
None of these
Coolant
Product

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Process Control and Instrumentation
An amplitude ratio of 0.1 corresponds to __________ decibels.

10
20
-20
-10

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Process Control and Instrumentation
The term analogous to voltage in a single tank system is the

Flow rate
Liquid volume in the tank
Heat content of the system
Level of liquid

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Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

Low thermal conductivity
Low flash point
High viscosity index
Low electrical conductivity

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Process Control and Instrumentation
Continuous measurement of moisture in paper is done by

Sling psychrometer
Weighing
Hair-hygrometer
High resistance Wheatstone's bridge circuit

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