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Under 14 CFR Part 23, what type of circuit protective device is required for starter motors?

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Final answer:

The power supplied to a starter motor in a large truck with a 24.0-V battery drawing 250 A is 6000 watts or 6 kilowatts. Increased resistance affects power supply and electrical safety systems like circuit breakers or fuses protect against thermal overload.

Step-by-step explanation:

To determine the power supplied to a starter motor, you apply the basic electrical power formula P = IV, where P is power in watts, I is current in amperes, and V is voltage in volts. In the context of a large truck with a 24.0-V battery hookup that draws 250 A, the power supplied to the starter motor is found by multiplying the current by the voltage (P = 250 A * 24.0 V).

Therefore, the power supplied is 6000 watts or 6 kilowatts. When dealing with increased resistance due to issues like corrosion, this will alter the effective resistance of the circuit, subsequently changing the current, voltage applied to the motor, and the power supplied to it. Furthermore, electrical safety systems like circuit breakers or fuses are critical to prevent thermal overload in electrical circuits, which is particularly important in high-current applications like starter motors for vehicles.

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