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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 1
36.
Compositional analysis of __________ is done using mass spectrometer.
an isotope
natural gas
a solid
an alloy
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
The function of a transducer is to
modify the input signal.
amplify the input signal.
convert the primary signal into a more useful quantity, usually an electric impulse.
codify/decodify the input signal.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Nichol's chart deals with
A.R. vs. phase lag of first order.
A.R. vs. phase lag of second order.
closed loop values vs. open loop values.
frequency response values of controllers.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?
Platinum-platinum + rhodium.
Iron-constantan.
Chromel-constantan.
All will give the same output.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if
Kc is reduced.
Kc is increased.
integral control action is introduced.
derivative control action is introduced.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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