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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 3
11.
Starting temperature of optical radiation pyrometer is __________ °C.
800
400
1200
1500
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Liquid argon level in a pressurised storage tank (at 3 kg/cm2 ) is measured by a/an
gage glass
external float gage
differential pressure gage
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Which of the systems having following transfer functions is stable?
1/(s2+ 2)
1/(s2-2s + 3)
1/(s2 + 2s + 2)
exp(-20s)/(s2 + 2s-l)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?
0.5 AT
2 AT
AT
1.5 AT
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
The transfer function for a first order process with time delay is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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