Discussion
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- Question
Bode stability method uses __________ loop transfer function.
Options- A. open
- B. closed
- C. either (a) or (b)
- D. neither (a) nor (b)
- Correct Answer
- open
- 1. Flow rate through an orifice is __________ the pressure differential.
Options- 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 Discuss
- 2. Working principle of radiation pyrometer is based on the
Options- A. Wien's law
- B. Kirchoffs law
- C. stefan-Boltzman law
- D. Seebeck effect Discuss
- 3. Polarisation of light forms the working principle of a
Options- A. polarimeter
- B. polarograph
- C. chromatograph
- D. spectrometer Discuss
- 4. Which is the most suitable instrument for measuring pressure below 3 microns?
Options- A. Mcleoid gauge
- B. Alphatron
- C. Ionisation gauge
- D. Bourdon guage Discuss
- 5. Mercury manometer (U-tube type) exemplifies a __________ order system.
Options- A. zero
- B. first
- C. second
- D. third Discuss
- 6. Dead zone in an instrument must be less than __________ percent of the scale.
Options- A. 0.2
- B. 1.5
- C. 4
- D. 8 Discuss
- 7. Liquid levels in autocalves are measued by
Options- A. simple float
- B. differential float type manometer
- C. glass gauge
- D. none of these Discuss
- 8. Process degree of freedom indicates __________ number of controllers to be used.
Options- A. the maximum
- B. the minimum
- C. both maximum and the minimum
- D. nothing about the Discuss
- 9. The transfer function of a pure dead time system with dead time ?d is
Options- A. 1/(?ds + 1)
- B. ?ds + 1
- C. e-?ss
- D. e?ds Discuss
- 10. Gas analysis is commonly done using the
Options- A. thermal conductivity cell
- B. X-ray diffraction
- C. mass spectrometer
- D. emission spectrometer Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: proportional to the square root of
Correct Answer: stefan-Boltzman law
Correct Answer: polarimeter
Correct Answer: Ionisation gauge
Correct Answer: second
Correct Answer: 0.2
Correct Answer: differential float type manometer
Correct Answer: the maximum
Correct Answer: e-?ss
Correct Answer: thermal conductivity cell
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