Discussion
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- Question
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.
Options- A. no change
- B. decrease
- C. increase
- D. exponential decrease
- Correct Answer
- increase
- 1. Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.
Options- A. 0-100
- B. < 0
- C. > 100.
- D. > 50 Discuss
- 2. Concentration of sugar solution can be determined by the
Options- A. polarimetry
- B. flame photometry
- C. emission spectroscopy
- D. oscillometry Discuss
- 3. Humidity of air can be determined by a
Options- A. chromatograph
- B. sling psychrometer
- C. mass spectrometer
- D. polarimeter Discuss
- 4. In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction
Options- A. heavy distillates
- B. intermediate distillates
- C. light ends
- D. residues Discuss
- 5. Visbreaking
Options- A. uses natural gas as feed.
- B. is carried out at atmospheric pressure.
- C. produces fuel oil of lower viscosity.
- D. produces gasoline only. Discuss
- 6. Specific gravity of a liquid can not be measured by a/an
Options- A. anemometer
- B. specific gravity bottle
- C. pycnometer
- D. hydrometer Discuss
- 7. The frequency response of a first order system, has a phase shift with lower and upper bounds given by
Options- A. - ?, ?/2
- B. -?/2, ?/2
- C. -?/2, 0
- D. 0, ?/2 Discuss
- 8. Which of the following can not measure a temperature of 1600°C?
Options- A. Platinum resistance thermometer
- B. Thermocouple
- C. Photo-electric pyrometer
- D. Radiation pyrometer Discuss
- 9. Degree to which an instrument indicates the changes in measured variable without dynamic error is called its
Options- A. speed of response
- B. reproducibility
- C. fidielity
- D. static characteristics Discuss
- 10. The transfer function for a P-D controller is
Options- A. Kc(1+?D s)
- B. Kc(1 +1/?D s)
- C. Kc ?D s
- D. Kc/?D s Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: > 100.
Correct Answer: polarimetry
Correct Answer: sling psychrometer
Correct Answer: heavy distillates
Correct Answer: produces fuel oil of lower viscosity.
Correct Answer: anemometer
Correct Answer: 0, ?/2
Correct Answer: Platinum resistance thermometer
Correct Answer: fidielity
Correct Answer: Kc(1+?D s)
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