Discussion
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- Question
Polarisation of light forms the working principle of a
Options- A. polarimeter
- B. polarograph
- C. chromatograph
- D. spectrometer
- Correct Answer
- polarimeter
- 1. 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
- 2. Mercury manometer (U-tube type) exemplifies a __________ order system.
Options- A. zero
- B. first
- C. second
- D. third Discuss
- 3. Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?
Options- A. Nickel
- B. Brass
- C. Chromel
- D. Invar Discuss
- 4. Characteristic equation is the denominator of __________ loop transfer function.
Options- A. open
- B. closed
- C. both (a)and (b)
- D. neither (a) nor (b) Discuss
- 5. Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.
Options- A. radiation
- B. optical
- C. photoelectric
- D. none of these Discuss
- 6. 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
- 7. 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
- 8. Bode stability method uses __________ loop transfer function.
Options- A. open
- B. closed
- C. either (a) or (b)
- D. neither (a) nor (b) Discuss
- 9. 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
- 10. Liquid levels in autocalves are measued by
Options- A. simple float
- B. differential float type manometer
- C. glass gauge
- D. none of these Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: Ionisation gauge
Correct Answer: second
Correct Answer: Brass
Correct Answer: closed
Correct Answer: photoelectric
Correct Answer: stefan-Boltzman law
Correct Answer: proportional to the square root of
Correct Answer: open
Correct Answer: 0.2
Correct Answer: differential float type manometer
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