Question 1

What shade lens should be worn when gas welding?&#10;A) No. 3&#10;C) as dark as you want&#10;B) No. 5&#10;D) no lenses are needed

Accepted Answer

For gas welding, a shade lens of No. 5 is typically recommended to protect the eyes from the bright light and UV radiation produced during the welding process.

Question 2

Which acts like a safety valve that will release any excess pressure caused by too much heat or too much pressure within the cylinder?&#10;A) pressure relief valve&#10;C) fusible plug&#10;B) check valve&#10;D) pop-off valve

Accepted Answer

C

Question 3

If a fitting has grooves cut into the flats, this means that it connects to the ____.&#10;A) blowtorch&#10;C) oxygen system&#10;B) regulator&#10;D) acetylene system

Accepted Answer

D

Question 4

What is the color code of the oxygen system?&#10;A) green&#10;C) black&#10;B) red&#10;D) blue

Accepted Answer

The color code for the oxygen system is green, which is internationally recognized for identifying oxygen cylinders and related equipment.

Question 5

Which is the correct status for the regulator before the cylinder valve is opened?&#10;A) closed&#10;C) there is no regulator on a cylinder.&#10;B) opened&#10;D) toggled

Accepted Answer

Before the cylinder valve is opened, the regulator should be closed. This ensures that no gas is flowing through the system and prevents any potential safety hazards.

Question 6

What color identifies the acetylene system?&#10;A) green&#10;C) black&#10;B) red&#10;D) blue

Accepted Answer

The color red identifies the acetylene system, as the gas cylinder is painted red to indicate flammable and explosive properties.

Question 7

A ____ is a molten pool of metal that is formed when the tip of the flame causes the base metal to melt.&#10;A) puddle&#10;C) weld&#10;B) bead&#10;D) plug

Accepted Answer

A puddle is a commonly used term in welding to describe the molten pool of metal that is formed when the base metal is heated by the flame.

Question 8

What type of weld is used to build up a surface by running one or more stringers or weave beads across an unbroken surface?&#10;A) groove weld&#10;C) surfacing weld&#10;B) plug weld&#10;D) fillet weld

Accepted Answer

A surfacing weld is used to build up a surface by running one or more stringers or weave beads across an unbroken surface. Groove welds are used to join two pieces with a V-shaped groove, plug welds are used to join two pieces through a hole, and fillet welds are used to join two pieces at an angle.

Question 9

Which welding position would be used when the metal to be welded is at a right angle to the floor and the bead is drawn across the metal from right to left or left to right?&#10;A) flat&#10;C) horizontal&#10;B) overhead&#10;D) vertical

Accepted Answer

When the metal to be welded is at a right angle to the floor and the bead is drawn across the metal from right to left or left to right, the welding position used is horizontal.

Question 10

What should always be present on a cylinder when it is in storage?&#10;A) label&#10;C) protector cap&#10;B) lockout&#10;D) ground wire

Accepted Answer

A protector cap should always be present on a cylinder when it is in storage to prevent any contaminants or debris from entering the valve. This can help ensure the safe use of the cylinder when it is later put into service. A label and lockout may be necessary for certain situations, but they are not always required for storage. A ground wire is also not typically necessary for cylinder storage.

Question 11

How can an acetylene leak be detected?&#10;A) smell&#10;C) bubbles after soapy water applied&#10;B) escaping gas turns green&#10;D) acetylene systems never leak

Accepted Answer

The answer of How can an acetylene leak be detected?&#10;A)...

Question 12

All cylinders should be ____ something to prevent them from falling.&#10;A) leaned against&#10;C) strapped to&#10;B) tied to&#10;D) chained to

Accepted Answer

The answer of All cylinders should be ____ something to...

Question 13

What is the strongest joint that can be welded?&#10;A) lap joint&#10;C) tee joint&#10;B) butt joint&#10;D) edge joint

Accepted Answer

The answer of What is the strongest joint that can...

Question 14

What type of weld joins two surfaces at right angles to each other?&#10;A) groove weld&#10;C) surfacing weld&#10;B) plug weld&#10;D) fillet weld

Accepted Answer

The answer of What type of weld joins two surfaces...

Question 15

What type of flame is used for welding all metals, including cast iron, malleable iron, wrought iron, and high-strength rods?&#10;A) neutral&#10;C) oxidizing&#10;B) carburizing&#10;D) metal

Accepted Answer

The answer of What type of flame is used for...

Deck 27: Gas Welding