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

Each planetary pinion gear meshes with both the central gear and the internal gear.
The internal gear is fixed to the planetary gear.
The six planetary pinions rotate in constant mesh with the internal gears.
One drive shaft is splined to the central gear and the other to the planetary gear.

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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
Maintains a seal and prevents escape of burned gases and oil leakage
Keeps the cylinder wall lubricated by holding oil in its channel
Lubricates the cylinder wall by releasing oil from its hole

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

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

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