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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 2
16.
Thermocouple in a thermal well behaves as a true
first order system.
second order system (overdamped).
multiple first order system.
second order system (underdamped).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The transfer function for a P-D controller is
Kc(1+τD s)
Kc(1 +1/τD s)
Kc τD s
Kc/τD s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Bode diagram is a plot of
log (AR) vs. log (f) and (Φ) vs. log (f).
log (AR) vs. f and log Φ vs.f.
AR vs. log (f) and Φ vs. log (f).
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Working principle of disappearing filament type optical pyrometer is based on the
Wien's law
Seebeck effect
Kirchoff's law
Peltier effect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.
no change
decrease
increase
exponential decrease
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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