Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part4 : 11 to 15
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.Maximum delivery pressure is a rotary air compressor is of the order of |
| 6 kg/cm2 |
| 10 kg/cm2 |
| 16 kg/cm2 |
| 25 kg/cm2 |
| 40 kg/cm2. |
12.The pressure ratio of an ideal vaned compressor with increase in mass flow rate |
| increases |
| decreases |
| remains constant |
| first decreases and then increases |
| unpredictable. |
13.Gas turbine works on |
| Brayton or Atkinson cycle |
| Carnot cycle |
| Rankine cycle |
| Erricsson cycle |
| Joule cycle. |
14.The maximum compression ratio in an actual single stage axial flow compressor is of the order of |
| 1 : 1.2 |
| 1 : 2 |
| 1 : 5 |
| 1 : 10 |
| 1 : 1 |
15.Surging is the phenomenon of |
| air stream blocking the passage |
| motion of air at sonic velocity |
| unsteady, periodic and reversed flow |
| air stream not able to follow the blade contour |
| production of no air pressure. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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