Chemical Engineering - Process Control and Instrumentation
Exercise :: Process Control and Instrumentation - Section 1
11.
Typical specifications for design stipulates the gain margin and phase margin to be respectively
A.
> 1.7 and > 30° B.
< 1.7 and > 30° C.
< 1.7 and < 30° D.
> 1.7 and < 30°
Answer: Option A
Explanation:
12.
Working principle of radiation pyrometer is based on the
A.
Wien's law B.
Kirchoffs law C.
Stafan-Boltzman law D.
Seebeck effect
Answer: Option C
Explanation:
13.
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?
A.
Peltier effect B.
Thomson effect C.
Seebeck effect D.
none of these
Answer: Option B
Explanation:
14.
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.
A.
Kelvin B.
Centigrade C.
Fahrenheit D.
Reaumer
Answer: Option C
Explanation:
15.
In a single tank system, the transfer function of level to inlet flow rate is
Answer: Option B
Explanation: