Discussion
Home ‣ Mechanical Engineering ‣ Compressors, Gas Dynamics and Gas Turbines Comments
- Question
The compressor efficiency is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Incorrect
- 1. In a compressed air system, the temperature of air discharged from the air motor is __________ than the initial compressor intake temperature.
Options- A. more
- B. less Discuss
- 2. A jet engine has
Options- A. no propeller
- B. propeller in front
- C. propeller at back
- D. propeller on the top Discuss
- 3. A gas turbine used in air-craft should have low weight and small frontal area.
Options- A. Correct
- B. Incorrect Discuss
- 4. A receiver in compressor installations is used to damp pressure waves in compressor discharge.
Options- A. Yes
- B. No Discuss
- 5. In a compressor, work is done on the piston during suction of air and work is done by the piston during compression as well as delivery of air.
Options- A. Agree
- B. Disagree Discuss
- 6. Euler's equation can be used for
Options- A. radial flow compressors
- B. axial flow compressors
- C. pumps
- D. all of these Discuss
- 7. The temperature of air at the beginning of the compression stroke is __________ the atmospheric temperature.
Options- A. equal to
- B. less than
- C. more than Discuss
- 8. The overall efficiency of the compressed air system is the
Options- A. ratio of shaft output of the air motor to the shaft input to the compressor
- B. ratio of shaft input to the compressor to the shaft output of air motor
- C. product of shaft output of air motor and shaft input to the compressor
- D. none of the above Discuss
- 9. In a centrifugal compressor, the ratio of the __________ to the blade velocity is called slip factor.
Options- A. inlet whirl velocity
- B. outlet whirl velocity
- C. inlet velocity of flow
- D. outlet velocity of flow Discuss
- 10. Free air is the air at atmospheric conditions at any specific location.
Options- A. True
- B. False Discuss
Compressors, Gas Dynamics and Gas Turbines problems
Search Results
Correct Answer: less
Correct Answer: no propeller
Correct Answer: Correct
Correct Answer: Yes
Correct Answer: Agree
Correct Answer: all of these
Correct Answer: more than
Correct Answer: ratio of shaft output of the air motor to the shaft input to the compressor
Correct Answer: outlet velocity of flow
Correct Answer: True
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.