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Chemical Engineering - Process Control and Instrumentation


Exercise

"I never see what has been done; I only see what remains to be done."
- Marie Curie
1. 

Which of the following is an undesirable dynamic characteristic of an instrument ?

A. Reproducibility
B. Dead zone
C. Time lag
D. Static error

2. 

Which of the following is not the triple point of water ?

A. 32°RB. 273°K
C. 492°RD. 32°F

3. 

Pick out the one which is a first order instrument.

A. Mercury in glass thermometer (without any covering or air gap).
B. Bare metallic thermometer.
C. Bare vapor pressure thermometer.
D. All (a), (b) and (c).

4. 

Load cells are used for the measurement of

A. stressB. weight
C. strainD. velocity

5. 

Which of the following is the dynamic characteristics of an instrument ?

A. Reproducibility
B. Sensitivity
C. Dead zone
D. Fidelity




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