Which of the following is an acceptable temporary replacement capacitor for a 35MFD, 440VAC capacitor?

The choice indicating a temporary replacement capacitor of 37.5 MFD at 440 VAC is indeed acceptable because it meets two critical criteria: the voltage rating and the capacitance range.

In electrical applications, particularly with capacitors, it's essential that the replacement capacitance is within an acceptable range of the original to maintain functionality. While a significant deviation in capacitance could affect performance, a higher capacitance such as 37.5 MFD is generally permissible for temporary applications, as it can still work in the circuit without causing damage or performance issues.

Furthermore, the voltage rating is also crucial; the replacement must be rated for at least the same voltage level as the original. Here, both the original capacitor and the temporary replacement have a voltage rating of 440 VAC, ensuring that the replacement can safely handle the voltage without risk of failure.

In summary, the chosen temporary capacitor choice is valid because it maintains the required voltage rating and provides a capacitance close enough to the original to work effectively in the application.