Question

technician a says that vacuum boosters use only single diaphragms to extract power from the atmospheric pressure and transmit force to the master cylinder. technician b says that a one - way vacuum check valve is used to prevent brake fluid from entering the vacuum booster. who is correct? select one: a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b

Explanation:

• Vacuum boosters can have single or dual diaphragms. So Technician A is wrong.
• A one - way vacuum check valve is used to maintain vacuum, not to prevent brake fluid from entering. Brake fluid is prevented from entering the vacuum booster by seals. So Technician B is wrong.

Answer:

d. Neither Technician A nor Technician B