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Process Control and Instrumentation

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

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

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Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

Velocity
None of these
Time
(time)⁻¹

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Process Control and Instrumentation
Which of the following thermocouples has the least temperature measurement range?

Chromel-alumel
Copper-constantan
Iron-constantan
Platinum-platinum/rhodium

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Process Control and Instrumentation
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a

Turbine flowmeter
Flow nozzle type flowmeter
Pitot tube
Magnetic flowmeter

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Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

∞
1
-1

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

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

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