Which of the following outlines the features of A.C welding over D.C welding?
1
1. The cost of equipment is higher 2. It is less safe as no-load voltage is high 3. The efficiency is higher due to the absence of rotating parts
2
1. The cost of equipment is higher 2. It is safer 3. The efficiency is higher due to the absence of rotating parts
3
1. The cost of equipment is cheaper 2. It is less safe as the no-load voltage is high 3. The efficiency is higher due to the absence of rotating parts
4
1. The cost of equipment is cheaper 2. It is less safe as the no-load voltage is high 3. The efficiency is lower due to the presence of rotating parts