Mechanical Engineering Questions And Answers :: Ic Engines: part1



Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

1.The pressure at the end of compression in the case of diesel engine is of the order of

6 kg/cm
12kg/cmz
20 kg/cmz
27.5 kg/cmz
35 kg/cm

2.The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

net efficiency
efficiency ratio
relative efficiency
overall efficiency
cycle efficiency.

3.Compression ratio of LC. engines is

the ratio of volumes of air in cylinder before compression stroke and after compression stroke
volume displaced by piston per stroke and clearance volume in cylinder
ratio of pressure after compression and before compression
swept volume/cylinder volume
cylinder volume/swept volume.

4.Supercharging is the process of

supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
providing forced cooling air
injecting excess fuel for raising more load
supplying compressed air to remove combustion products fully
raising exhaust pressure.

5.The specific fuel consumption per BHP hour for diesel engine is approximately

0.15 kg
0.2 kg
0.25 kg
0.3 kg
0.35 kg.

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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