Automobile Engineering in ME
In Spark Ignition Engine

Both (A) and (B)
Only air is introduced into the cylinder
None of these
The mixture of air and fuel is introduced into the cylinder from carburettor

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Automobile Engineering in ME
The main feature of Macpherson strut suspension is that

Non vertical external forces are supported by the suspension arms
The unsprung mass in lighter
The vertical size of the suspension can be made more compact
The assembly is slightly more complicated in design

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Automobile Engineering in ME
The major purpose of an electronically controlled automatic transmission is that this type of transmission

Eliminates gear clutches
Reduces shift shock and achieves more efficient transmission of engine torque
Eliminates the gear shaft lever
Reduces the number of automatic transmission components

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Automobile Engineering in ME
The function of oil control rings is that it

Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan
Keeps the cylinder wall lubricated by holding oil in its channel
Lubricates the cylinder wall by releasing oil from its hole
Maintains a seal and prevents escape of burned gases and oil leakage

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