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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 6
41.
The level of a liquid under pressure can be determined using
bubbler system
differential pressure manometer
diaphragm box system
air-trap system
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature
emf produced is very low of the order of microvolt.
embrittlement of iron occurs.
rusting of iron takes place.
both (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Which of the following is never used as an element of industrial resistance thermometer ?
Lead
Nickel
Copper
30% iron + 70% nickel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Which of the following shows maximum dip effect (indicating reverse direction of temperature change) ?
Mercury thermometer
Radiation pyrometer
Bimetallic thermometer
Thermocouple
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
A stable system is the one
for which the output response is bounded for all bounded input.
which exhibits an unbounded response to a bounded input
which satisfies the conditions for a servo problem.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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