When the battery master switch is ON, which is true?

When the battery master switch is ON, which is true?

• A. Power is removed from electrical system
• B. The battery is not connected
• C. Power is available for starting and system operation
• D. The system is in standby mode

Answer: (C)

The battery master switch controls whether the battery is connected to the electrical system. When it is ON, the battery is connected and can supply DC power to the electrical bus, providing power for starting the engine and for normal system operation. This means loads and the starting system can draw from the battery, even if the generator isn’t yet supplying power. The other options describe the battery being disconnected or the system being in standby, which is not what the ON position does.

The battery master switch controls whether the battery is connected to the electrical system. When it is ON, the battery is connected and can supply DC power to the electrical bus, providing power for starting the engine and for normal system operation. This means loads and the starting system can draw from the battery, even if the generator isn’t yet supplying power. The other options describe the battery being disconnected or the system being in standby, which is not what the ON position does.