Final answer:
The correct answer is option A) Starter motor. An armature brake is used in starter motors to hold the armature shaft stationary when the engine is running and to stop it from rotating when the vehicle is turned off.
Step-by-step explanation:
The correct answer is option A) Starter motor.
An armature brake is a mechanism used to stop or hold the armature shaft of a motor in a fixed position. It prevents the motor from rotating when it is not in use or when it needs to be held in place. The most common application of an armature brake is in starter motors used in automotive engines.
The starter motor is responsible for initiating the engine's rotation when the vehicle is started. It uses an armature brake to hold the motor's armature shaft stationary when the engine is running and to stop it from rotating when the vehicle is turned off. This ensures that the engine does not continue to run after the key is turned off.
The correct answer is option A) Starter motor.
Armature brakes are typically used in systems where rapid stopping of the motor's rotation is crucial, such as in the case of a starter motor for an internal combustion engine. The starter motor needs to disengage quickly once the engine starts to avoid damage due to overspeeding.
Systems like a landing light retraction motor (B) or an inverter drive motor (C) do not usually require the immediate stopping that an armature brake provides.
Therefore, starter motors are most likely to be equipped with an armature brake to ensure the safe and reliable operation of the vehicle's engine starting system.