Discussion
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- Question
A sinusoidal variation in the input passing through a linear first order system
Options- A. becomes more oscillatory (frequency increases).
- B. becomes less oscillatory (frequency decreases).
- C. gets amplified (magnitude increases).
- D. gets attenuated (magnitude decreases).
- Correct Answer
- gets attenuated (magnitude decreases).
- 1. Range of hydrogen gas constant volume themometer is __________ °C.
Options- A. -10 to 20
- B. 0 to 100
- C. 100 - 500
- D. 400 - 1000 Discuss
- 2. Which of the following filled system expansion thermometer has the capability to measure the lowest temperature?
Options- A. Mercury in glass thermometer
- B. Mercury in steel thermometer
- C. Alcohol in glass thermometer
- D. Fused metal (Na or K) in steel thermometer Discuss
- 3. Pick out the wrong statement
Options- A. Proportional controller is normally used for level control in industrial applications.
- B. CSTR can be considered as a distributed parameter system.
- C. Distributed parameter approach gives partial differential equation.
- D. Non-linear behaviour is exemplified by an on-off controller. Discuss
- 4. Radiation pyrometers as compared to thermocouples
Options- A. has a slower speed of response.
- B. can measure higher temperature.
- C. can't measure the temperature of moving objects.
- D. is more affected by corrosive atmosphere. Discuss
- 5. A barometer measures the __________ pressure.
Options- A. absolute
- B. gauge
- C. absolute as well as gauge
- D. dynamic Discuss
- 6. Identify an unbounded input from inputs whose transfer functions are given below
Options- A. 1
- B. 1/S
- C. 1/S2
- D. 1/(S2 + 1) Discuss
- 7. __________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'.
Options- A. Celcius
- B. Rankine
- C. Reumur
- D. Farenhite Discuss
- 8. In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.
Options- A. outlet flow rate
- B. level
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 9. Working principle of disappearing filament type optical pyrometer is based on the
Options- A. Wien's law
- B. Seebeck effect
- C. Kirchoff's law
- D. Peltier effect Discuss
- 10. Configuration of Bourdon spring tube is never made of __________ shape.
Options- A. circular
- B. semi-circular
- C. helical
- D. spiral Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: 0 to 100
Correct Answer: Alcohol in glass thermometer
Correct Answer: CSTR can be considered as a distributed parameter system.
Correct Answer: can measure higher temperature.
Correct Answer: absolute
Correct Answer: 1/S2
Correct Answer: Reumur
Correct Answer: outlet flow rate
Correct Answer: Wien's law
Correct Answer: circular
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