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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 1
16.
Which of the following is a desirable characteristic of an instrument ?
High drift
High fidelity
High measuring lag
Poor reproducibility
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The operation of a rotameter is based on
variable flow area.
rotation of a turbine.
pressure drop across a nozzle.
pressure at a stagnation point.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.
chromel-alumel
iron-constantan
platinum-platinum/rhodium
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Instrumentation in a plant offers the advantage of
greater safety of operation
better quality of product
greater operation economy
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?
Radiation/infrared pyrometer
Filled system thermometer
Mercury in glass thermometer
Thermo electric pyrometer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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