Mechanical Engineering Questions And Answers :: Ic Engines: part4

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 2021 and IES 2021 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
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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