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

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

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Automobile Engineering in ME
The purpose of a balancer shaft is to

Increase inertia force of the rotating crankshaft
Adjusts the timing of the intake and exhaust valve openings
Balance the timing in the movement of the two groups of pistons
Reduce vibrations caused by the crankshaft rotation

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