2. Powertrains

Transmission Design — Quiz

Test your understanding of transmission design with 5 practice questions.

Practice Questions

Question 1

In a high-speed automatic transmission, which mechanical loss predominantly arises from the shearing of transmission fluid between rotating components?

Question 2

A vehicle’s engine produces 200 Nm of torque. If the first gear ratio is 3.5:1, the final drive ratio is 4:1, and drivetrain efficiency is 85%, what torque is delivered to the drive wheels?

Question 3

Given a three-stage gear train with individual stage ratios of 3:1, 2:1, and 4:1, what is the overall transmission ratio?

Question 4

Which shift strategy in automatic transmissions prioritizes fuel economy by upshifting at lower engine speeds?

Question 5

For a CVT using a variator with input pulley diameter $D_{in}$ and output pulley diameter $D_{out}$, what is the instantaneous gear ratio $GR$?