?Why is it important to keep portable welders properly tuned?
A. ?Reduce air pollution
B. ?So they run quieter
C. ?To produce smoother welding current
D. ?All of the above
Answer: A
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Describe the welds required (if any) to join A2 to A3.
Review drawing number 523879C0A and then answer the question.
Completely clogged air filters can lead to ____.
A. low evaporator fan amperage B. compressor damage C. evaporator ice formation D. all of the above
What unit specification should be used to size the overcurrent protection?
A) The minimum circuit ampacity (MCA) B) The maximum overcurrent protection (MOCP) C) The locked rotor amps (LRA) D) The rated load amps (RLA)
When a system with a water-cooled condenser cycles off, the water regulating valve should ____.
A. remain open during the off cycle B. close, since the head pressure is lower C. open all the way to remove any residual heat D. re-calibrate itself to maintain the new lower head pressure