Welding Knowledge Part 2

The proportion of time that a welder can operate without overheating is known as its

• AC/DC

• AWS classification

• Duty cycle

• Voltage drop

A chipping hammer is used to

• prepare edges for welding

• remove scale from steel

• remove slag

• temper beads

An organization of people and agencies interested in promoting welding is the 

• AWS

• EPA

• SAE

• WPA

The temperature of an electric welding arc is about

• 400°F

• 840°F

• 1,800°F

• 9,000°F

Welding tables should be made of 

• concrete

• masonite

• metal

• wood

Fire extinguishers for welding areas should be suitable for 

• Class A fires

• Class B fires

• Class C fires

• all of these

If only one kind of electrode for all arc welding is to be purchased, the best choice is an

• E6010

• E6011

• E6013

• E7018

For most welding in agricultural mechanics, the best electrode size is

• 1/16"

• 1/8"

• 3/16"

• 1/4"

Correct arc length is approximately

• 1/8"

• 1/4"

• 3/8"

• 1/2"

When welding, the operator sees by

• daylight

• fluorescent light

• light from the arc

• all of these