Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part1 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.The pressure at the end of compression in the case of diesel engine is of the order of |
| 6 kg/cm |
| 12kg/cmz |
| 20 kg/cmz |
| 27.5 kg/cmz |
| 35 kg/cm |
2.The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called |
| net efficiency |
| efficiency ratio |
| relative efficiency |
| overall efficiency |
| cycle efficiency. |
3.Compression ratio of LC. engines is |
| the ratio of volumes of air in cylinder before compression stroke and after compression stroke |
| volume displaced by piston per stroke and clearance volume in cylinder |
| ratio of pressure after compression and before compression |
| swept volume/cylinder volume |
| cylinder volume/swept volume. |
4.Supercharging is the process of |
| supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere |
| providing forced cooling air |
| injecting excess fuel for raising more load |
| supplying compressed air to remove combustion products fully |
| raising exhaust pressure. |
5.The specific fuel consumption per BHP hour for diesel engine is approximately |
| 0.15 kg |
| 0.2 kg |
| 0.25 kg |
| 0.3 kg |
| 0.35 kg. |
More Ic Engines QUESTIONS AND ANSWERS available in next pages
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