Technician A says that a dual circuit hydraulic brake system master cylinder can be known as a tandem master cylinder. Technician B says that a tandem master cylinder has a single bore and two separate pistons. Who is correct?

Technician B says that a tandem master cylinder has a single bore and two separate pistons is correct.

Explanation:

A tandem master cylinder is characterized by two pistons operating in series within a common bore.

A hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing glycol ethers or diethylene glycol, to transfer pressure from the controlling mechanism to the braking mechanism.

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