Technician A says in order to provide additional gear ratios, most transmissions are equipped with more that one planetary gear set. Technician B says that from a single planetary gear set, five forward gear combinations are possible, although some of these combinations are seldom used. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Both technicians are correct. In order to provide additional gear ratios, most modern transmissions are equipped with multiple planetary gear sets. From a single planetary gear set, five forward gear combinations are possible, although some of these combinations may not be commonly used.

Technician a Says in Order to Provide Additional Gear Ratios