How is electric motor heat determined?

The calculation for determining the heat generated by an electric motor involves understanding the relationship between electrical power and thermal output. The formula Volts x Amps provides the total power in watts (when expressed in a direct current system). However, in alternating current systems, this needs to be adjusted for the power factor, which accounts for the efficiency of the motor in converting electric power to mechanical power.

The factor of 3.41 is significant in this context as it converts electrical energy (in watts) into thermal energy (in British Thermal Units, or BTUs). This means that when you multiply the voltage by the current and then by the power factor, the result is further refined by multiplying by 3.41 to express the generated heat in a practical thermal measurement unit.

This factor essentially symbolizes the quantity of energy required to raise the temperature of one pound of water by one degree Fahrenheit, making it a crucial part of converting electrical output into thermal output relevant for systems in the real world.

The other options feature different factors that do not align with standard conversions or heating calculations commonly used in electrical engineering and motor performance assessments. Thus, the use of 3.41 in option B provides the correct and most relevant calculation to assess the heat produced by an electric