May Quiz of the Month
Shielded Metal-Arc Welding Basic
- Transformer/rectifier type welding machines
a) Have alternating or direct current output
b) Have alternating current output only
- Rotating type welding machines can be powered by
a) Electric motor or internal combustion engines
b) Transformers
- Most welding machines are rated at a 60% duty cycle. This means that.
a) The welding machine may be used at 60% of its rated current
b) The welding machine may be used 6 minutes out of every 10 minutes at its rated load
- If the welding machine is operated at less than its rated load
a) It may be operated for longer periods of time without stopping
b) The operating time does not change
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Answers