Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part4 : 16 to 20
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.The theoretically correct air fuel ratio for petrol engine is of the order of |
| 6 : 1 |
| 9 : 1 |
| 12 : 1 |
| 15 : 1 |
| 20 : 1. |
17.In a naturally aspirated diesel engine, the air is supplied by |
| a supercharger |
| a centrifugal blower |
| a vacuum chamber |
| an injection tube |
| forced chamber |
18.For the same power developed in I.C. engines, the cheaper system is |
| naturally aspirated |
| supercharged |
| centrifugal pump |
| turbo charger |
| none of the above. |
19.Diesel engine can work on very lean air fuel ratio of the order of 30 : 1. A petrol engine can also work on such a lean ratio provided |
| it is properly designed |
| best quality fuel is used |
| can not work as it is impossible |
| flywheel size is proper |
| engine cooling is stopped. |
20.A diesel engine has |
| 1 valve |
| 2 valves |
| 3 valves |
| 4 valves |
| no valve. |
More Ic Engines QUESTIONS AND ANSWERS available in next pages
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