Chemical Engineering - Process Control and Instrumentation

11.
A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.
-38.9
-11.9
-60.9
-80.9
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
__________ controller has the maximum stabilising time.
P
PD
PI
PID
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the
mercury in glass thermometer.
optical pyrometer.
iron-constantan thermocouple.
alcohol filled thermometer.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Stalagmometer is used for the measurement of
kinematic viscosity
surface tension
refractive index
optical activity
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to
d
d2
d3
d4
Answer: Option
Explanation:
No answer description is available. Let's discuss.