Discussion
Home ‣ Chemical Engineering ‣ Process Control and Instrumentation Comments
- Question
The open loop transfer function of a control system is
. This represents
Options- A. a first order system.
- B. dead time system.
- C. a first order time lag.
- D. a second order system.
- Correct Answer
- a first order system.
- 1. Presence of a small amount of water in the organic systems can be determined by the __________ method.
Options- A. electrical conductivity
- B. polarimetry
- C. emission spectroscopy
- D. dielectric constant end loss factor Discuss
- 2. Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is
Options- A. water
- B. carbon tetrachloride
- C. paraffin
- D. ethylene glycol Discuss
- 3. Thermal conductivity cell is the primary element of a/an __________ analyser.
Options- A. oxygen
- B. carbon dioxide
- C. carbon monoxide
- D. sulphur dioxide Discuss
- 4. Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the
Options- A. mercury in glass thermometer.
- B. optical pyrometer.
- C. iron-constantan thermocouple.
- D. alcohol filled thermometer. Discuss
- 5. Which of the following flow-metering instru-ments is an areameter?
Options- A. Venturimeter
- B. Rotameter
- C. Pitot tube
- D. Hot wire anemometer Discuss
- 6. __________ is the static characteristics of an instrument,
Options- A. Response
- B. Tine lag
- C. Drift
- D. dynamic error Discuss
- 7. A pyrheliometer is an instrument used for measuring the
Options- A. bright sunshine period.
- B. beam radiation.
- C. diffuse radiation.
- D. none of these. Discuss
- 8. A simple pitot tube measures the
Options- A. average velocity
- B. maximum velocity
- C. point velocity
- D. static pressure Discuss
- 9. Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature
Options- A. emf produced is very low of the order of microvolt.
- B. embrittlement of iron occurs.
- C. rusting of iron takes place.
- D. both (b) and (c). Discuss
- 10. Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an
Options- A. venturimeter
- B. orificemeter
- C. magnetic flow meter
- D. hot wire anemometer Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: dielectric constant end loss factor
Correct Answer: paraffin
Correct Answer: carbon dioxide
Correct Answer: optical pyrometer.
Correct Answer: Rotameter
Correct Answer: Drift
Correct Answer: beam radiation.
Correct Answer: static pressure
Correct Answer: both (b) and (c).
Correct Answer: magnetic flow meter
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.