You find a "blown" start capacitor marked 330 volts - 140 uF. Which set of capacitors on your truck can be used as a replacement?

In this scenario, the key details to note about the capacitor specifications are the voltage rating and capacitance. The start capacitor marked 330 volts - 140 uF needs to be replaced with a capacitor that has the same or higher voltage rating and the same capacitance.

For voltage rating, both 440 volts and 550 volts exceed the original 330 volts, making them suitable substitutions in terms of voltage safety. This is important because using a capacitor with a voltage rating lower than the original can result in failure or "blowing" due to excessive voltage.

When it comes to capacitance, the replacement capacitor should ideally match the original's capacitance of 140 uF for optimal performance. In this case, both of the capacitors listed in the choices (440 volts - 40 uF and 550 volts - 100 uF) fall short of the required 140 uF, which would not provide the necessary starting torque and function as intended.

The combination of the capacitors in the correct answer provides an option that maintains a voltage rating above the requirement, but it is important to note that none of these capacitors deliver the 140 uF value on their own. However, when combined, they indicate the potential for finding capac