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Process Control and Instrumentation

Process Control and Instrumentation
A system with transfer function (2S/4S) + 1 is of __________ order.

2nd
3rd
1st
Zero

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Process Control and Instrumentation
Stalagmometer is used for the measurement of

Refractive index
Kinematic viscosity
Surface tension
Optical activity

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Process Control and Instrumentation
Phase margin is equal to

Phase lag + 180°
Phase lag - 180°
Phase lag + 90°
180° - phase lag

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Process Control and Instrumentation
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?

CO₂
O₂
NO₂
NO

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Process Control and Instrumentation
Which of the following is not a mechanical pressure sensing element?

Bellows
Bourdon tube
Diaphragm
U-tube

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

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

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