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Process Control and Instrumentation

Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

3
13
29
0.1

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Process Control and Instrumentation
Nichol's chart deals with

R. vs. phase lag of second order
R. vs. phase lag of first order
Closed loop values vs. open loop values
Frequency response values of controllers

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Process Control and Instrumentation
Emission spectroscopy is used for

Determination of CO₂ in gases
Determining water purity
Solids and metal analysis
NOxdetermination

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

Bellows
Diaphragm
U-tube
Bourdon tube

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Process Control and Instrumentation
Phase lag of the sinusoidal response of a first order system is

90°
180°
120°
30°

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Process Control and Instrumentation
Psychrometer determines the

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

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MORE MCQ ON Process Control and Instrumentation

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