Question

inverters generate less heat because they operate ______.

with smaller components
more efficiently
at a high operating frequency

Explanation:

Analyze the characteristics of inverter power sources

Using the Welding Power Sources knowledge point

Inverter-based welding power sources convert incoming utility power to high-voltage AC, switch it at high frequencies (typically 10 kHz to 100 kHz or more), step it down through a small transformer, and then rectify it to DC.

Determine the cause of reduced heat generation

Because inverter power sources operate at much higher electrical efficiency compared to traditional heavy transformer-rectifier machines, less electrical energy is wasted as heat. This higher efficiency is the direct reason they generate less heat during operation.

Answer:

• With smaller components
• More efficiently (Correct answer)
• At a high operating frequency