Chemical Engineering - Process Control and Instrumentation

1. 

The temperature range for which copper resistance thermometer can be used is __________ °C

A. 0 to 150
B. -200 to 150
C. 350 to 750
D. 500 to 900

Answer: Option B

Explanation:

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2. 

Paramagnetism method is not used for the composition determination of __________ in gases.

A. oxygen
B. oxides of nitrogen
C. carbon dioxide
D. any of these

Answer: Option C

Explanation:

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3. 

An amplitude ratio of 0.1 corresponds to __________ decibels.

A. 20
B. -20
C. 10
D. -10

Answer: Option B

Explanation:

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4. 

For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a

A. large area but small mass.
B. high thermal conductivity.
C. small specific heat.
D. all'a', 'b' & 'c'.

Answer: Option D

Explanation:

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5. 

Pressure of 0.0001 absolute psi can be measured by __________ gauge.

A. Mcloid
B. Pirani
C. thermocouple
D. none of these

Answer: Option A

Explanation:

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