Final answer:
Tech A is correct about alternator pulleys being designed to freewheel in one direction. Tech B is incorrect; the alternator output terminal is not connected to the slip rings. The output terminal is connected to the battery and other electrical components, while slip rings are part of the rotor assembly providing electrical connection through the brushes.
Step-by-step explanation:
The question involves understanding the concept of alternator pulleys and alternator design for automobile electric systems. Tech A is correct; some alternator pulleys are indeed designed to freewheel in one direction. This feature, often found in overrunning alternator decoupler (OAD) pulleys and one-way clutches, allows the pulley to spin freely when the alternator rotor is spinning faster than the accessory belt, which can improve belt lifespan and reduce noise and vibration.
As for Tech B's claim, it is not correct. The alternator output terminal is not connected to a slip ring. Instead, it is typically connected to the battery and other electrical components of the vehicle, providing them with power. The slip rings in an alternator are part of the rotor assembly and are used to provide an electrical connection between the rotating rotor and the stationary stator through the carbon brushes, which is different from the output terminal connection.