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PROCESS CONTROL AND INSTRUMENTATION

Process Control and Instrumentation
Volumetric expansion is the working principle of the __________ thermometers.

Bimetallic
Mercury in glass
Vapor pressure
Constant volume gas

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Process Control and Instrumentation
Smoke density of the flue gas going out of the chimney is measured by a

Chromatograph
Photo electric cell
Thermal conductivity meter
Polarograph

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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

Flow nozzle type flowmeter
Magnetic flowmeter
Turbine flowmeter
Pitot tube

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Process Control and Instrumentation
The initial value (t=0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is

43832
1
2

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Process Control and Instrumentation
The function of a transducer is to

Codify/decodify the input signal
Convert the primary signal into a more useful quantity, usually an electric impulse
Amplify the input signal
Modify the input signal

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