Which of the following statements is LEAST-Likely to be correct?
A) A chassis dyno measures horsepower available at the vehicle's drive wheels.
B) Road horsepower is always greater than brake horsepower.
C) On a chassis dynamometer, one roller is attached to the power absorption unit and the other is an idle roller.
D) Chassis dynamometers can be driven by the wheels or connected directly to the hubs.

Question

Quizplus · Accepted Answer

Brake horsepower refers to the engine's horsepower before the loss in power caused by the gearbox, generator, differential, water pump, and other auxiliary components. Road horsepower, which is measured at the drive wheels, is typically less than brake horsepower due to these losses. Therefore, the statement that road horsepower is always greater than brake horsepower is the least likely to be correct.

Which of the Following Statements Is LEAST-Likely to Be Correct