Discussion
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- Question
In axial flow compressors, the flow of air is parallel to the axis of compressor.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Correct
- 1. The mean effective pressure of the compressor is the
Options- A. actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions
- B. volume of air delivered by the compressor
- C. volume of air sucked by the compressor during its suction stroke
- D. none of the above Discuss
- 2. Separators are generally used in air compressor installations
Options- A. before the intercooler
- B. after the intercooler
- C. between the aftercooler and receiver
- D. before first stage suction Discuss
- 3. The operation of the reciprocating air motor is similar to reciprocating air compressor.
Options- A. True
- B. False Discuss
- 4. A compressor at high altitudes will require __________ power.
Options- A. same
- B. less
- C. more Discuss
- 5. In n1 and n2 are the indices of compression for the first and second stage of compression, then the ratio of workdone on the first and second stages (W1/W2) with perfect intercoooing is given by
Options- A.
- B.
- C.
- D.
Discuss
- 6. When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be
Options- A. forward curved
- B. backward curved
- C. radial
- D. none of these Discuss
- 7. The ratio of the isothermal power to the shaft power or brake power of the motor or engine required to drive the compressor is called overall isothermal efficiency.
Options- A. True
- B. False Discuss
- 8. Standard air is the air at __________ and relative humidity of 36 percent.
Options- A. 0.1 bar and 20° C
- B. 1 bar and 20° C
- C. 0.1 bar and 40° C
- D. 1 bar and 40° C Discuss
- 9. The assumption made in two stage compression with intercooler is that
Options- A. there is no pressure drop in the intercooler
- B. the compression in both the cylinders is polytropic
- C. the suction and delivery of air takes place at constant pressure
- D. all of the above Discuss
- 10. The absolute pressure of air at the outlet of a compressor is called
Options- A. back pressure
- B. critical pressure
- C. discharge pressure
- D. none of these Discuss
Compressors, Gas Dynamics and Gas Turbines problems
Search Results
Correct Answer: none of the above
Correct Answer: between the aftercooler and receiver
Correct Answer: False
Correct Answer: less
Correct Answer:
Correct Answer: forward curved
Correct Answer: True
Correct Answer: 1 bar and 20° C
Correct Answer: all of the above
Correct Answer: discharge pressure
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