Discussion
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- Question
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?
Options- A. 0.1
- B. 3
- C. 13
- D. 29
- Correct Answer
- 13
- 1. Reset rate is the another term used for __________ time.
Options- A. dead
- B. integral
- C. derivative
- D. none of these Discuss
- 2. The temperature range for which copper resistance thermometer can be used is __________ °C
Options- A. 0 to 150
- B. -200 to 150
- C. 350 to 750
- D. 500 to 900 Discuss
- 3. High temperature of around 2000°C of incandescent gas mantles is measured by a/an
Options- A. specially designed thermocouple.
- B. optical pyrometer.
- C. radiation pyrometer.
- D. none of these. Discuss
- 4. Which of the systems having following transfer functions is stable?
Options- A. 1/(s2+ 2)
- B. 1/(s2-2s + 3)
- C. 1/(s2 + 2s + 2)
- D. exp(-20s)/(s2 + 2s-l) Discuss
- 5. Alphatron measures pressure __________ microns.
Options- A. < 1
- B. < 3
- C. > 3
- D. < 0.1 Discuss
- 6. A pyranometer is an instrument used for measuring the
Options- A. beam radiation.
- B. global radiation.
- C. bright sunshine period.
- D. none of these. Discuss
- 7. An aneroid barometer measures the __________ pressure.
Options- A. atmospheric
- B. absolute
- C. vacuum
- D. gage Discuss
- 8. Which of the following does not figure in the list of seven substances selected for international temperature scale?
Options- A. Ice (F.P) and steam (B.P)
- B. Oxygen and sulphur (B.P)
- C. Antimony and silver (F.P)
- D. Zinc (B.P) and mercury (F.P) Discuss
- 9. Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?
Options- A. Water
- B. Mercury
- C. Methyl alcohal
- D. Carbon-tetrachloride Discuss
- 10. Very low pressure is expressed in microns(?), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.
Options- A. 0.0001
- B. 0.001
- C. 0.01
- D. 0.1 Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: integral
Correct Answer: -200 to 150
Correct Answer: radiation pyrometer.
Correct Answer: 1/(s2 + 2s + 2)
Correct Answer: > 3
Correct Answer: global radiation.
Correct Answer: absolute
Correct Answer: Zinc (B.P) and mercury (F.P)
Correct Answer: Mercury
Correct Answer: 0.001
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