Mechanical Engineering Questions And Answers :: Ic Engines: part4

Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part4 : 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.For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of

9 : 1
12 : 1
15 : 1
18 : 1
20: 1.

7.Air fuel ratio at which a petrol engine can not work is

8 : 1
10 : 1
15 : 1
20 : 1 and less
will work at all ratios.

8.Which of the following is the lightest and most volatile liquid fuel

fuel oil
lub oil.

9.A stoichiometric air-fuel ratio is

chemically correct mixture
lean mixture
rich mixture for idling
rich mixture for over loads
the ratio used at full rated parameters.

10.Pour point of fuel oil is the

minimum temperature to which 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
it catches fire without external aid
indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off
temperature at which it flows easily.

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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