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Process Control and Instrumentation

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

Isotopes
Alkali metals
Natural gas
Solids

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Process Control and Instrumentation
Which of the following filled system expansion thermometer has the capability to measure the lowest temperature?

Mercury in glass thermometer
Fused metal (Na or K) in steel thermometer
Mercury in steel thermometer
Alcohol in glass thermometer

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

Second order system
Transportation lag
None of these
First order system

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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

Oil
A metal powder or graphite
Mercury
Air

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Process Control and Instrumentation
Zirconia probe is used for the measurement of

Speed of a submarine
Humidity of air
% CO₂ in flue gas
% O₂ in flue gas

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Process Control and Instrumentation
The transfer function of a first order system is

None of these
1/(Ts + 1)
S/(Ts + 1)
1/Ts

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