NOCTI practice

A class A fire extinguisher can be safely used on a/an ____ fire.

• wood

• grease

• electrical

• magnesium

When welding in a confined space, the welder must have

• all equipment in the confined space

• a second welder inside the space

• an approved breathing device

• a watchperson outside the space

On an OFC set-up, the hose with the right-handed thread fittings connects to which gas?

• acetylene

• argon

• oxygen

• C-25

Which of the following is a ferrous metal?

• aluminum

• mild steel

• copper

• lead

Welding with intermittent welds on both sides of a T-joint will result in

• controlling distortion over the entire joint

• pulling too little heat in the joint for a successful weld

• putting too much heat in the joint for a successful weld

• controlling the atmosphere around the metal on both sides of the joint

The ability of a metal to withstand shock loading is known as its

• toughness

• hardness

• ductility

• malleability

Ductility is a term used to describe what mechanical property in metals?

• ability to resist penetration

• ability to withstand impact

• ability to be stretched and formed

• ability to withstand corrosion

Identify the toe.

• 1

• 2

• 3

• 4

• 5

Which of the following welds aligns two metal pieces approximately in the same plane?

• butt joint

• lap joint

• corner joint

• T-joint

12. Information contained in the tail of a welding symbol might include

• type of weld

• location of weld

• welding dimensions

• welding process