Discussion
Home ‣ Mechanical Engineering ‣ Compressors, Gas Dynamics and Gas Turbines Comments
- Question
A rotary compressor is driven by an
Options- A. electric motor
- B. engine
- C. either (a) or (b)
- D. none of these
- Correct Answer
- either (a) or (b)
- 1. In the aircraft propellers
Options- A. the propulsive matter is ejected from within the propelled body
- B. the propulsive matter is caused to flow around the propelled body
- C. its functioning does not depend upon the presence of air
- D. none of the above Discuss
- 2. Which of the following statement is wrong?
Options- A. In a two stage reciprocating air compressor with complete intercooling, maximum work is saved.
- B. The minimum work required for a two stage reciprocating air compressor is double the work required for each stage.
- C. The ratio of the volume of free air delivery per stroke to the swept volume of the piston is called volumetric efficiency.
- D. none of the above Discuss
- 3. Gas turbine as compared to steam turbine
Options- A. requires less space for installation
- B. has compressor and combustion chamber
- C. has less efficiency
- D. all of these Discuss
- 4. The maximum delivery pressure in a rotary air compressor is
Options- A. 10 bar
- B. 20 bar
- C. 30 bar
- D. 50 bar Discuss
- 5. Intercooling in compressors results in saving of power in compressing given volume of air to a given pressure.
Options- A. Correct
- B. Incorrect Discuss
- 6. The maximum combustion pressure in gas turbine is __________ as compared to I.C. engine.
Options- A. more
- B. less Discuss
- 7. The efficiency of a jet engine is higher at
Options- A. low speeds
- B. high speeds
- C. low altitudes
- D. high altitudes Discuss
- 8. An open cycle gas turbine works on the same cycle as that of a closed cycle gas turbine.
Options- A. Yes
- B. No Discuss
- 9. The maximum temperature in a gas turbine is
Options- A. 200°C
- B. 500°C
- C. 700°C
- D. 1000°C Discuss
- 10. In a jet propulsion
Options- A. the propulsive matter is ejected from within the propelled body
- B. the propulsive matter is caused to flow around the propelled body
- C. its functioning does not depend upon presence of air
- D. none of the above Discuss
Compressors, Gas Dynamics and Gas Turbines problems
Search Results
Correct Answer: the propulsive matter is ejected from within the propelled body
Correct Answer: none of the above
Correct Answer: all of these
Correct Answer: 10 bar
Correct Answer: Correct
Correct Answer: less
Correct Answer: high altitudes
Correct Answer: Yes
Correct Answer: 700°C
Correct Answer: the propulsive matter is caused to flow around the propelled body
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