It can be done with 90% efficiency.
You can not convert the transformer without cutting the secondary windings. The secondary winding is a split secondary that is wound that way from the manufacturer. To accomplish what you asked would entail unwinding each side of the 12 volt winding half way. At this point solder a pigtail out to a terminal block. This would be your 6 volt tap. Then the coil would have to be rewound to its original state as before the unwind. This same procedure will then be done to the other side of the secondary. Done as a project, maybe, workable within ones capabilities, no.
If it is AC then you don't need a formula, you just need a transformer.
No. You need 12 volt AC to run a 12 volt AC motor, not 12 volt DC.
12 volt
This might be a homework question, in which case you find the power, which is 3 x 746 watts, and divide by the voltage to find the current taken if the efficiency is 100%, and that is 9.325 amps. So the efficiency is 9.325/12 or 77.7%. In practice the question is complicated by the power factor of the motor, which means that the watts taken are less than the volts times amps. The power factor could well be 0.777, in which case the efficiency would be 100%.
If that 1940 Chrysler is in original condition, it would have a 6 volt system. Originally, it was a 6-volt. However, many people convert them to 12-volt systems for convenience purposes.
Use a voltage devider or a transformer.
With an appropriately rated DC to DC converter.
To convert 24 volt trailer lights to 12 volt, you will need to install a voltage regulator or resistor in the circuit to reduce the voltage to 12 volts. Alternatively, you can also replace the 24 volt lights with 12 volt lights designed for trailers.
change all the light bulbs to 12v
Probably about 180 watts, assuming 90% efficiency.
No, a 60-watt solar panel generates DC electricity, which is not compatible with a standard 12V AC bulb. You would need a DC bulb specifically designed for use with a solar panel or an inverter to convert the DC power to AC power for the bulb to light up.
To convert amps to watts in a 12-volt application, you can use the formula: Watts = Volts x Amps. Therefore, in a 12-volt circuit, if you have 1 amp of current, the power consumption would be 12 watts (12V x 1A).
On would use a 12 volt battery for a lot of things. For example, a lot of Fisher Price toys and games, power wheels vehicles have a type of 12 volt system.
To convert low voltage lights (e.g. 12 volts) to wattage equivalent to 110 volt lights, you would divide the voltage by 10. For example, 50 watts in a 110 volt system would be equivalent to a 5 watt bulb in a 12 volt system.
Originally it would have been a 6 volt system.
Generally, a 24-volt inverter can be more efficient than a 12-volt inverter because higher voltage systems allow for lower current draw, reducing resistive losses in the system. This can lead to improved efficiency and less strain on the components over time. However, the overall efficiency also depends on the quality and design of the inverter itself.