Freddy Bueno
Quiz by , created more than 1 year ago

This quiz focuses on Module number 4 for welding inspections Level 1

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Freddy Bueno
Created by Freddy Bueno about 9 years ago
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CWB - Module 4 ( Welding Processes an Equipment)

Question 1 of 27

1

Welding is a joining process that by definition requires the application of:

Select one of the following:

  • both heat and pressure

  • either heat or pressure

  • both heat and filler metal

  • both pressure and filler metal

  • all of the above

Explanation

Question 2 of 27

1

In arc welding, the electric arc is intensely hot with temperatures exceeding:

Select one of the following:

  • 20,000 Degrees C

  • 30,000 Degrees C

  • 33,000 Degrees C

  • 40,000 Degrees C

  • 50,000 Degrees C

Explanation

Question 3 of 27

1

The most common gas used with gas shielded flux cored arc welding is:

Select one of the following:

  • Pure argon

  • Pure helium

  • 75% Ar-25% CO2

  • Argon with 10% Hydrogen

Explanation

Question 4 of 27

1

The technique used for semi-automatic welding with gas shielded flux cored arc welding is:

Select one of the following:

  • Drag (backhand)

  • Push (forehand)

Explanation

Question 5 of 27

1

Welding equipment for gas shielded flux cored arc welding is essentially the same as for gas metal arc welding.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 27

1

Gas shielded flux cored wires with basic ingredients in the core are ideally suited for out-of-position welding

Select one of the following:

  • True
  • False

Explanation

Question 7 of 27

1

Constant voltage power source are preferred for SMAW

Select one of the following:

  • True
  • False

Explanation

Question 8 of 27

1

Large diameter electrodes are preferred for welding the root passes in V grooves and for out-of-position welds

Select one of the following:

  • True
  • False

Explanation

Question 9 of 27

1

Constant voltage power source are generally used for GMAW.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 27

1

In the submerged arc welding process, granular flux is placed on the unleaded seam behind the consumable electrode.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 27

1

Fused fluxes are prone to moisture pick up

Select one of the following:

  • True
  • False

Explanation

Question 12 of 27

1

The source of heat in the resistance welding process is:

Select one of the following:

  • An electric arc

  • External pressure

  • Resistance of the copper electrode to electron flow

  • Electrical resistance of the workpieces

Explanation

Question 13 of 27

1

Which of the following arc welding processes is non-consumable electrode type?

Select one of the following:

  • GTAW

  • SMAW

  • GMAW

  • FCAW

  • SAW

Explanation

Question 14 of 27

1

Which of the following arc welding processes is non-consumable electrode type?

Select one of the following:

  • SMAW

  • GMAW

  • FCAW

  • SAW

  • PAW

Explanation

Question 15 of 27

1

The electron beam welding process results in:

Select one of the following:

  • wide, deep-penetrating welds and heat-affected zones.

  • narrow, deep-penetrating welds and heat-affected zones.

  • Narrow, shallow-penetrating welds and heat-affected zones.

  • wide, shallow-penetrating welds and heat-affected zones.

Explanation

Question 16 of 27

1

In thermite welding, the reaction from which the required heat and molten metal is obtained is called:

Select one of the following:

  • Exothermic

  • Duo thermic

  • Interthermic

  • endothermic

Explanation

Question 17 of 27

1

In electroslag welding, the usual cooling medium used on the copper shoes is:

Select one of the following:

  • Dry ice

  • Air

  • Oil

  • Water

Explanation

Question 18 of 27

1

A welding arc consist of a:

Select one of the following:

  • Low current and a high voltage

  • High current and a low voltage

  • High current and a high voltage

  • Low current and a low voltage

Explanation

Question 19 of 27

1

The heat of the welding arc is used to:

Select one of the following:

  • Locally melt the base material and filler material to create fusion upon solidification

  • Heat the base material and melt the filler material to form a surface bond between the two materials

  • Heat the materials to be jointed before the application of pressure

  • Promote a metallurgical reaction resulting in the bonding of the adjoining materials

Explanation

Question 20 of 27

1

Welding using the GTAW process with current set to DCEN (Direct Current Electrode Negative) results in:

Select one of the following:

  • 30% arc heat at the electrode and 70% arc heat at the work.

  • 70% arc heat at the electrode and 30% arc heat at the work

  • 40% arc heat at the electrode and 60% arc heat at the work

  • 60% arc heat at the electrode and 40% arc heat tat the work

Explanation

Question 21 of 27

1

The function of the ingredients in the electrode coating of SMAW electrodes is to:

Select one of the following:

  • Provide a gas shield, slag covering, scavengers, arc stabilization and additional alloying elements.

  • React with the base metal to assist in the weld fusion

  • Remove rust, mill scale and other contaminants from the surface of the joint.

  • Counteract the effects of arc blow.

Explanation

Question 22 of 27

1

The temperature for holding low-hydrogen electrodes is:

Select one of the following:

  • 30 Degrees C

  • 90 Degrees C

  • 120 Degrees C

  • 430 Degrees C

Explanation

Question 23 of 27

1

The GMAW Process uses _______________ To shield the molten weld metal from the atmosphere:

Select one of the following:

  • A slag system

  • External shielding gas

  • A blanket of flux

  • a vacuum chamber

Explanation

Question 24 of 27

1

Flux cored arc welding is a welding process usually used in the semi-automatic mode consisting of:

Select one of the following:

  • A constant current power supply, a continuos wire feeder, a welding gun, and a continuos solid filler metal electrode

  • A constant voltage power supply, a continuos speed wire feeder, a welding gun, and a continuos filler metal electrode with a hollow core containing flux and other ingredients

  • A constant current power supply, a variable speed wire feeder, a welding gun, and a continuos filler metal electrode with a hollow core containing flux and other ingredients

  • A constant voltage power supply, a continuos speed wire feeder, a welding gun, and a continuos filler metal electrode with a hollow core containing primarily metal powder

Explanation

Question 25 of 27

1

For a flat weld profile and good penetration profile using the metal cored arc welding process (MCAW), a travel angle of:

Select one of the following:

  • 20 Degrees using a drag technique should be used

  • 10 Degrees using a drag technique should be used

  • 15 Degrees using a push technique should be used

  • 30 Degrees using a push technique should be used

Explanation

Question 26 of 27

1

SAW fluxes:

Select one of the following:

  • Are classified, each with its own separate designation

  • Are not classified. Only the wire is classified

  • Are classified in conjunction with the welding wire forming a flux-wire designation

  • Are all classified with EM12K wire. Used with other wires would require companies to perform testing to verify desired properties

Explanation

Question 27 of 27

1

A major advantage of the electron beam welding process is:

Select one of the following:

  • Low equipment cost and ease of use

  • High speed welding of thin materials

  • Fit-up of joints does not have to be precise

  • Full penetration welds on thick materials in one pass

Explanation

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