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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 1
26.
Temperature measuring instruments are standardised mostly with __________ points of pure substances.
melting
boiling
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Pick out the first order system from among the following.
Damped vibrator.
Mercury in glass thermometer kept in boiling water.
Interacting system of two tanks in series.
Non-interacting system of two tanks in series.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.
250
500
750
1000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Which of the following controllers has the least maximum deviation ?
P-controller
P-I controller
P-I-D controller
P-D controller
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Volumetric expansion is the working principle of the __________ thermometers.
mercury in glass
constant volume gas
vapor pressure
bimetallic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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