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Process Control and Instrumentation

Process Control and Instrumentation
The frequency response of a first order system, has a phase shift with lower and upper bounds given by

-π/2, 0
- ∞, π/2
-π/2, π/2
0, π/2

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Process Control and Instrumentation
Psychrometer determines the

Humidity of gases
Water of crystallisation
Hygroscopic nature of solids
Moisture content of solids

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Process Control and Instrumentation
Thermal conductivity cell is the primary element of a/an __________ analyser.

Sulphur dioxide
Oxygen
Carbon dioxide
Carbon monoxide

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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
Pitot tube
Magnetic flowmeter
Flow nozzle type flowmeter

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Process Control and Instrumentation
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with

Mercury
A metal powder or graphite
Air
Oil

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Process Control and Instrumentation
Starting temperature of optical radiation pyrometer is __________ °C.

1500
400
1200
800

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