Chemical Engineering - Process Control and Instrumentation

16. 

Working principle of radiation pyrometer is based on the

A. Wien's law
B. Kirchoffs law
C. stefan-Boltzman law
D. Seebeck effect

Answer: Option C

Explanation:

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17. 

Liquid levels in autocalves are measued by

A. simple float
B. differential float type manometer
C. glass gauge
D. none of these

Answer: Option B

Explanation:

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18. 

E.m.f. generated by thermocouples is of the order of

A. millivolts
B. microvolts
C. volts
D. kilo volts

Answer: Option A

Explanation:

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19. 

A pyrheliometer is an instrument used for measuring the

A. bright sunshine period.
B. beam radiation.
C. diffuse radiation.
D. none of these.

Answer: Option B

Explanation:

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20. 

Flow rate through an orifice is __________ the pressure differential.

A. proportional to
B. inversely proportional to the square root of
C. proportional to the square root of
D. inversely proportional to the square of

Answer: Option C

Explanation:

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