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Process Control and Instrumentation

Process Control and Instrumentation
The amplitude ratio for the sinusoidal response of __________ is < 1.

First order system
Transportation lag
Second order system
None of these

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Process Control and Instrumentation
Which of the following can measure temperatures in the range of - 20 to 300°C ?

Mercury in glass thermometer
None of these
Resistance thermometer
Vapor pressure thermometer

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

Alkali metals
Solids
Natural gas
Isotopes

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc τD s
Kc/τD s
Kc(1 +1/τD s)
Kc(1+τD s)

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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
Magnetic flowmeter
Flow nozzle type flowmeter
Pitot tube

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Process Control and Instrumentation
Thermal conductivity measurement is used for the determination of

O₂ percentage in the flue gas
Specific gravity of petrofuels
CO₂ percentage in the flue gas
Composition of an alloy

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