FREE AVIATION AND STUDY GAMES ABOUT WELDING

PDF Download

FREE AVIATION AND STUDY GAMES ABOUT WELDING

EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -37 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: in selecting a torch tip size to use in welding, the size of the tip opening determines the

Answer:

Amount of heat applied to the work Question 2: Oxides form very rapidly when alloys or metals are hot. it is important, therefore, when welding aluminum to use a

Answer:

Flux Question 3: When welding or cutting, the acetylene pressure gauge should never be set higher than

Answer:

15 PSI

Question 4: Which statement concerning a welding process is true?

Answer:

the inert-arc welding process uses an inert gas to protect the weld zone from the atmosphere.

Question 5: Which statement concerning soldering is correct?

Answer:

joints in electric wire to be soldered should be mechanically secure prior to soldering

Question 6: Engine mount members should preferably be repaired by using a

Answer:

Larger diameter tube with fish mount and rosette welds

Question 7: In Gas tungsten Arc (GTA) welding, a stream of inert gas is used to

Answer:

Prevent the formation of oxides in the puddle Question 8: in gas welding, the amount of heat applied to the material being welded is controlled by the

Answer:

Size of the tip opening Question 9: Where should the flux be applied when oxyacetylene welding aluminum?

Answer:

painted on the surface to be welded and applied to the welding rod.Question 10: Which of the following can normally be welded without adversely affecting strength?

Answer:

• SAE 4130 chrome/molybdenum tubing

Question 11: What method of repair is recommended for a steel tube longeron dented at a cluster?

Answer:

Welded patch plate

Question 12: Why should a carburizing flame be avoided when welding steel?

Answer:

it hardens the surface

Question 13: Acetylene at a line pressure above 15 PSI is

Answer:

Dangerously unstable

Question 14: A welding torch backfire may be caused by

Answer:

A loose tip

Question 15: the oxyacetylene flame for silver soldering should be

Answer:

Neutral

Question 16: Cylinders used to transport and store acetylene

Answer:

Contain Acetone

Question 17: When a butt-welded joint is visually inspected for penetration,

Answer:

100 percent of the thickness of the base metal Question 18: Why are aluminum plates 1/4 inch or more thick usually preheated before welding?

Answer:

Reduces internal stresses and assures more complete penetration Question 19: Why is it necessary to use flux in all silver soldering operations?

Answer:

To chemically clean the base metal of oxide film.

Question 20: Which statement best describes magnesium welding?

Answer:

it can be welded successfully using the same type of joints that are used for aluminum.

Question 21: Filling or grinding a weld bead is considered to be

Answer:

A way to bring about strength reduction in joint

Question 22: the oxyacetylene flame used for aluminum welding should

Answer:

Be neutral and soft

Question 23: Annealing of the aluminum

Answer:

Removes stresses caused by forming Question 24: A resurfaced soldering iron cannot be used effectively until after the working face has been

Answer:

Tinned Question 25: A very thin and pointed tip on a soldering copper is undesirable because it will

Answer:

Cool too rapidly

Question 26: If too much acetylene is used in the welding of stainless steel,

Answer:

The metal will absorb carbon and lose its resistance to corrosion Question 27: When selecting a welding rod, one of the most important factors to consider is to ensure that

Answer:

the proper AMS specification number is used

Question 28: Welding over brazed or soldered joints is

Answer:

Not permitted