Automobile Engineering in ME
Which one of the following statement correctly describes the construction of a bevel gear type differential?

The differential carrier houses differential pinion gears and side gears; each pinion gear meshes with a different side gear.
The drive shafts are splined to the differential carrier.
The differential carrier houses differential pinion gears and side gears.
The left side gear and the differential carrier rotate in constant unison.

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Automobile Engineering in ME
The compression ratio in petrol engine is kept less than in Diesel engine because

Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition
It is just customary to have less compression ratio in petrol engines
It makes petrol engines lighter
Less compression ratio gives better performance

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