Mechanical Engineering Questions And Answers :: Ic Engines: part3

Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part3 : 6 to 10

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

6.The term scavenging is generally associated with

2-stroke cycle engines
4-stroke cycle engines
aeroplane engines
diesel engines
high efficiency engines.

7.The size of inlet valve engine in comparison to exhaust valve is

more/less depending on capacity of engine
varies from design to design.

8.A diesel engine as compared to petrol engine (both running ar rated load) is

more efficient
less efficient
equally efficient
other factors will decide it.

9.Flash point of fuel oil is

minimum temperature to which1 oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
temperature at which it solidifies or congeals
temperature at which it catches fire without external aid
indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off
none of the above.

10.In a typical medium speed 4 stroke cycle diesel engine

exhaust valve opens at 35� before bot-tom dead center and closes at 20� after top dead center
exhaust valve opens at bottom dead center and closes at top dead center
exhaust valve opens just after bottom dead center and closes just before top dead center
may open and close anywhere
none of the above is true.

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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