Manitoba Class 3 Drivers Licence Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Manitoba Class 3 Drivers Licence Test with essential questions and materials tailored for success on your exam. Utilize engaging quizzes and resources that will boost your knowledge and confidence. Start your journey to driving larger vehicles today!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

Are engine brake retarders more effective at low engine rpm or high rpm?

  1. Low engine rpm

  2. High engine rpm

  3. There is no difference

  4. Engine rpm does not affect brake retarders

The correct answer is: High engine rpm

Engine brake retarders work by using the engine's compression to slow the vehicle down, so they are most effective at high engine rpm when there is more compression. At low engine rpm, there is less compression to use, making the retarders less effective. Option A is correct because it indicates that low engine rpm is not the most effective, while options C and D are incorrect as they suggest there is no difference or that engine rpm does not affect the retarders at all.

More Questions Like This