Mechanical Engineering Questions And Answers :: Ic Engines: part3

Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part3 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.Pick up the wrong statement about supercharging

supercharging reduces knocking in diesel engines
there can be limited supercharging in petrol engines because of detonation
supercharging at high altitudes is essential
supercharging results in fuel economy
supercharging is essential in aircraft engines.

2.Engine pistons 'are usually made of aluminum alloy because it

is lighter
wears less
absorbs shocks
is stronger
does not react with fuel and lub oil.

3.The actual volume of fresh charge admitted in 4-stroke petrol engine is

equal to stroke volume
equal to stroke volume and clearance volume
less than stroke volume
more than stroke volume
more than cylinder volume.

4.In diesel engine, the compression ratio in comparison to expansion ratio is

more/less depending on engine capacity.

5.Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows

using additives in the fuel
engine derating i.e. reducing the maxi-mum flow of fuel
increasing the compression ratio
adherence to proper fuel specification
avoidance of overloading.

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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