Ic Engines QUESTIONS AND ANSWERS

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 2024 and IES 2024 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 of.an engine in comparison to exhaust valve is

less

same

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

unpredictable

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