Two technicians are discussing automatic transmissions. Technician A says planetary gear sets must always mesh. Technician B says planetary gear sets should have gear lash. Which technician is correct?

Technician A says compound gearsets increase the number of components in a planetary gear set. Technician B says compound gearsets increase the number of available gear ratios. Which technician is correct?

Two technicians are discussing helical gears. Technician A says the teeth on a helical gear are straight-cut. Technician B says the contact of the gear tooth starts at the tip and rolls down the tooth.

Technician A says that when the external teeth of two gears are in mesh they rotate in the same direction. Technician B says that when two gears, one with internal teeth and other with external teeth, are in mesh, they rotate in the same direction. Which technician is correct?

Technician A states proper maintenance of an automatic transmission will ensure the vehicle performs as expected for a long time. Technician B states improper maintenance, such as using the wrong automatic transmission fluid, may result in premature clutch material failures. Which technician is correct?

Technician A says that modern cars use synchronized transmissions. Technician B says that motorcycles use sequential manual transmissions. Which technician is correct?