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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 4
16.
Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by
making the volume of thermometer bulb as large as conveniently possible.
reducing the volume of the capillary to a minimum.
reducing the volume of the receiving element to a minimum.
all 'a', 'b' & 'c'.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Which of the following is not a differential pressure flow meter ?
Rotameter
Flow nozzle
Orificemeter
Venturimeter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change ?
Water
Mercury
Methyl alcohal
Carbon-tetrachloride
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Bourdon gauges are used for measuring pressure (kg/cm2 )
< atmospheric
> 2 (gauge)
< 2 (gauge)
> 10 (absolute)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in
light intensity
current
flux density
voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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