QANDA2733 QANDA2733
  • 04-11-2022
  • Physics
Answered

two technicians are discussing vacuum brake boosters. technician a says that when the engine is running and the driver's foot is off the brake pedal, a vacuum is present on both sides of the booster diaphragm. technician b says that when the brakes are in the applied position, vacuum is present on the front side of the diaphragm. which technician is correct?



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