What is the purpose of the check valve in a vacuum power brake system?

A. It allows vacuum to the booster.
B. It stops the release of vacuum from the booster back to the engine.
C. Both A and B are correct
D. Neither A nor B is correct


Answer: C

Trades & Technology

You might also like to view...

What can the driver do to reduce the possibility of brake fade caused by heat?

A) Select a lower transmission gear B) Ride the brakes to keep the shoes and pads against the drum or rotor C) Shift the transmission into neutral and allow the vehicle to coast down long or steep hills D) Pump the brake pedal while descending a steep hill

Trades & Technology

When is the Y terminal energized on most heat pump thermostats?

A) Anytime the system is energized B) Both first-stage heating and cooling C) In first stage cooling only D) In first stage heating only

Trades & Technology

Conductor strands exposed as a result of stripping will result in _____

a. lower conductivity b. overheating c. a safety hazard d. low mechanical strength

Trades & Technology

A skin irritation that can be caused by exposure to cement is called _____.