WELDING

34問 • 1年前

ユーザ名非公開

通報

問題一覧

In gas welding, the amount of heat applied to the material being welded is controlled by the

Size of the tip opening

Where should the flux be applied when oxyacetylene welding aluminum?

Painted on the surface to be welded and applied to the welding rod

A welding torch backfire may be caused by

A loose tip

If too much acetylene is used in the welding of stainless steel

The metal will absorb carbon and lose its resistance to corrosion

The shielding gases generally used in the Gas Tungsten Arc (GTA) welding of aluminum consists of

helium or argon, or a mixture of helium and argon

Cylinders used to prevent to transport and store acetylene

contain acetone

Which of the following can normally be welded without adversely affecting strength? 1. Aircraft bolts 2. SAE 4130 chrome/molybdenum tubing 3. Spring steel struts 4. Most heat-treated steel/nickel alloy components

Oxygen and acetylene cylinders are made of

Steel

Oxides form very rapidly when alloys or metals are hot. It is important, therefore, when welding aluminum to use a

Flux

When a butt welded joint is visually inspected for penetration

The penetration should be 100 percent of the thickness of the base metal

In Gas Tungsten Arc (GTA) welding , a stream of inert gas is used to

Prevent the formation of oxides in the puddle

The oxyacetylene flame used for aluminum welding should

Be neutral and soft

High pressure cylinders used to transport and store acetylene must

Contain acetone

How should a welding torch flame be adjusted to weld stainless steel?

Slightly carburizing

Which statement concerning soldering is correct?

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

The most important consideration (s) when selecting welding rod is

Material compatibility

In selecting a torch tip size to use in welding, the size of the tip opening determines the

Amount of heat applied the work

Engine mount members should preferably be repaired by using a

Larger diameter tube with fishmouth and rosette welds

A very thin and pointed tip on a soldering copper is undesirable because it will

Cool too rapidly

What method of repair is recommended for a steel tube longeron dented at a cluster

Welded patch plate

Acetylene at a line pressure above 15 PSI is

Dangerously unstable

The oxyacetylene flame for silver soldering should be

Neutral

Which statement concerning a welding process is true?

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

Welding over brazed or soldered joint is

Not permitted

Why should a carburizing flame be avoided when welding steel?

It hardens the surface

Which statement best describes magnesium welding?

Filler rod should be the same composition as a base metal

Why is it necessary to use flux in all silver soldering operations?

To chemically clean the base metal of oxide film

Edge notching is generally recommended in butt welding above a certain thickness of aluminum because it

Aids in getting full penetration of the metal and prevents local distortion

Filing or grinding a weld bead is considered to be

A way to bring about strength reduction in joint

What purpose does flux serve in welding aluminum?

Minimizes or prevents oxidation

A resurfaced soldering iron cannot be used effectively until after the working face has been

Tinned

Which statement is true in regard to welding heat- treated magnesium?

The welded section does not have the strength of the original metal

Annealing of aluminum

Removes stresses caused by forming

Why are aluminum plates ¼ inch or more thick usually preheated before welding?

Reduces internal stresses and assures more complete penetration

airlaw

airlaw

pcar & afcar

pcar & afcar

new set

new set

human factor

human factor

human factor 2

human factor 2

Engine instrument system

ユーザ名非公開 · 54問 · 1年前

Engine instrument system

Propellers

Propellers

Propellers (2)

Propellers (2)

Induction and engine airflow system

ユーザ名非公開 · 42問 · 1年前

Induction and engine airflow system

42問 • 1年前

ユーザ名非公開

Ignition starting system

ユーザ名非公開 · 100問 · 1年前

Ignition starting system

100問 • 1年前

ユーザ名非公開

Ignition starting system (2)

ユーザ名非公開 · 29問 · 1年前

Ignition starting system (2)

Auxiliary power unit

Auxiliary power unit

Reciprocating engines

ユーザ名非公開 · 100問 · 1年前

Reciprocating engines

Turbine engines

Turbine engines

Turbine engines (2)

Turbine engines (2)

Fuel metering systems

ユーザ名非公開 · 98問 · 1年前

Fuel metering systems

98問 • 1年前

ユーザ名非公開

Aircraft landing gear system

ユーザ名非公開 · 79問 · 1年前

Aircraft landing gear system

79問 • 1年前

ユーザ名非公開

Sheetmetal & Non sheetmetalic structure

ユーザ名非公開 · 100問 · 1年前

Sheetmetal & Non sheetmetalic structure

100問 • 1年前

ユーザ名非公開

Sheetmetal and non sheetmetalic structure

ユーザ名非公開 · 30問 · 1年前

Sheetmetal and non sheetmetalic structure

Aircraft fuel system

Aircraft fuel system

問題一覧

In gas welding, the amount of heat applied to the material being welded is controlled by the

Size of the tip opening

Where should the flux be applied when oxyacetylene welding aluminum?

Painted on the surface to be welded and applied to the welding rod

A welding torch backfire may be caused by

A loose tip

If too much acetylene is used in the welding of stainless steel

The metal will absorb carbon and lose its resistance to corrosion

The shielding gases generally used in the Gas Tungsten Arc (GTA) welding of aluminum consists of

helium or argon, or a mixture of helium and argon

Cylinders used to prevent to transport and store acetylene

contain acetone

Oxygen and acetylene cylinders are made of

Steel

Oxides form very rapidly when alloys or metals are hot. It is important, therefore, when welding aluminum to use a

Flux

When a butt welded joint is visually inspected for penetration

The penetration should be 100 percent of the thickness of the base metal

In Gas Tungsten Arc (GTA) welding , a stream of inert gas is used to

Prevent the formation of oxides in the puddle

The oxyacetylene flame used for aluminum welding should

Be neutral and soft

High pressure cylinders used to transport and store acetylene must

Contain acetone

How should a welding torch flame be adjusted to weld stainless steel?

Slightly carburizing

Which statement concerning soldering is correct?

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

The most important consideration (s) when selecting welding rod is

Material compatibility

In selecting a torch tip size to use in welding, the size of the tip opening determines the

Amount of heat applied the work

Engine mount members should preferably be repaired by using a

Larger diameter tube with fishmouth and rosette welds

A very thin and pointed tip on a soldering copper is undesirable because it will

Cool too rapidly

What method of repair is recommended for a steel tube longeron dented at a cluster

Welded patch plate

Acetylene at a line pressure above 15 PSI is

Dangerously unstable

The oxyacetylene flame for silver soldering should be

Neutral

Which statement concerning a welding process is true?

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

Welding over brazed or soldered joint is

Not permitted

Why should a carburizing flame be avoided when welding steel?

It hardens the surface

Which statement best describes magnesium welding?

Filler rod should be the same composition as a base metal

Why is it necessary to use flux in all silver soldering operations?

To chemically clean the base metal of oxide film

Edge notching is generally recommended in butt welding above a certain thickness of aluminum because it

Aids in getting full penetration of the metal and prevents local distortion

Filing or grinding a weld bead is considered to be

A way to bring about strength reduction in joint

What purpose does flux serve in welding aluminum?

Minimizes or prevents oxidation

A resurfaced soldering iron cannot be used effectively until after the working face has been

Tinned

Which statement is true in regard to welding heat- treated magnesium?

The welded section does not have the strength of the original metal

Annealing of aluminum

Removes stresses caused by forming

Why are aluminum plates ¼ inch or more thick usually preheated before welding?

Reduces internal stresses and assures more complete penetration