quiz 3 Flashcards
T or F : welding power sources include “Step-Down Transformers”
True
T or F : Welding Arc Temperatures exceed 11,000 Degrees F
True
T or F : Direct current is the best type of current for stick welding to eliminate arc blow
False
T or F : A step-down transformer takes high voltages with low amperages and produces lower voltages with higher amperages
True
T or F : Welders with a DC output must have a rectifier
True
A welding machine with a 90% duty cycle can be used:
9 out of every 10 mins, 54 out of every 60 mins ect.
Welding cables that are too small for the amperage load of the welder will cause:
A higher voltage drop and the cables to heat up
The purpose of the ground cable on an electric welding machine is to:
Provide a complete circuit for the welding process
Rectifiers are used to:
Allow current to flow in only one direction
What does the term SMAW stand for?
Shielded Metal Arc Welding
What does DCEP stand for:
Direct current electrode positive
What does DCEN stand for:
Direct current electrode negative
What does AC stand for:
Alternating Curent
Wattage
Measurement of electrical power (V x A)
Voltage
Measurement of electrical pressure
