Discussion
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- Question
__________ thermometer can not measure sub-zero (< 0° C) temperature,
Options- A. Mercury in glass
- B. Bimetallic
- C. Vapor pressure
- D. Resistance
- Correct Answer
- Bimetallic
- 1. The unit step response of the transfer function 1/(s2 + 2s + 3)
Options- A. has a non-zero slope at the origin.
- B. has a damped oscillatory characteristics.
- C. is overdamped
- D. is unstable Discuss
- 2. Paramagnetism method is not used for the composition determination of __________ in gases.
Options- A. oxygen
- B. oxides of nitrogen
- C. carbon dioxide
- D. any of these Discuss
- 3. The amplitude ratio for the sinusoidal response of a __________ is 1.
Options- A. first order system
- B. second order system
- C. transportation lag
- D. none of these Discuss
- 4. Which of the following judges the accuracy of an instrument?
Options- A. Dead zone
- B. Drift
- C. Static error
- D. None of these Discuss
- 5. Positioning controllers are used for
Options- A. low loads
- B. temperature changes
- C. high loads
- D. flow rate changes Discuss
- 6. The amplitude ratio for the sinusoidal response of __________ is < 1.
Options- A. transportation lag
- B. first order system
- C. second order system
- D. none of these Discuss
- 7. Which of the following controllers has maximum offset?
Options- A. P-controller
- B. P-I controller
- C. P-D controller
- D. P-I-D controller Discuss
- 8. Liquid argon level in a pressurised storage tank (at 3 kg/cm2 ) is measured by a/an
Options- A. gage glass
- B. external float gage
- C. differential pressure gage
- D. none of these Discuss
- 9. Starting temperature of optical radiation pyrometer is __________ °C.
Options- A. 800
- B. 400
- C. 1200
- D. 1500 Discuss
- 10. Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their
Options- A. low thermal conductivity.
- B. low electrical conductivity.
- C. high viscosity index.
- D. low flash point. Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: has a damped oscillatory characteristics.
Correct Answer: carbon dioxide
Correct Answer: transportation lag
Correct Answer: Static error
Correct Answer: high loads
Correct Answer: first order system
Correct Answer: P-controller
Correct Answer: differential pressure gage
Correct Answer: 800
Correct Answer: low electrical conductivity.
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