MICHIGAN MECHANIC TEST PREP 2025 –
AUTOMATIC TRANSMISSION STUDY GUIDE
WITH ACCURATE ANSWERS
◉ With an automatic transmission the operator selects a speed or
range of speeds, what does the transmission do in reaction?.
Answer: The transmission then up shifts or down shifts
automatically depending on machine speed or load conditions.
◉ what are some advantages of planetary gear sets?. Answer: •Gears
are kept in constant mesh - no grinding or missed shifts.
• Planetary gear sets can be smaller and more compact because gear
tooth loading is spread over a larger contact area. Many teeth in
contact instead of just a few.
• Smaller bearings required because radial thrust loads are
cancelled out and axial thrust loads are very small.
• Planetary gear set is capable of producing a great number of
speeds and directions so fewer gear sets may be required.
◉ When an external toothed gear is meshed with an internal
toothed gear they rotate in the same direction.. Answer:
AUTOMATIC TRANSMISSION STUDY GUIDE
WITH ACCURATE ANSWERS
◉ With an automatic transmission the operator selects a speed or
range of speeds, what does the transmission do in reaction?.
Answer: The transmission then up shifts or down shifts
automatically depending on machine speed or load conditions.
◉ what are some advantages of planetary gear sets?. Answer: •Gears
are kept in constant mesh - no grinding or missed shifts.
• Planetary gear sets can be smaller and more compact because gear
tooth loading is spread over a larger contact area. Many teeth in
contact instead of just a few.
• Smaller bearings required because radial thrust loads are
cancelled out and axial thrust loads are very small.
• Planetary gear set is capable of producing a great number of
speeds and directions so fewer gear sets may be required.
◉ When an external toothed gear is meshed with an internal
toothed gear they rotate in the same direction.. Answer:
