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CWB - Module 4 ( Welding Processes an Equipment)

Description

This quiz focuses on Module number 4 for welding inspections Level 1
Freddy Bueno
Quiz by Freddy Bueno, updated more than 1 year ago
Freddy Bueno
Created by Freddy Bueno almost 10 years ago
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Resource summary

Question 1

Question
Welding is a joining process that by definition requires the application of:
Answer
  • both heat and pressure
  • either heat or pressure
  • both heat and filler metal
  • both pressure and filler metal
  • all of the above

Question 2

Question
In arc welding, the electric arc is intensely hot with temperatures exceeding:
Answer
  • 20,000 Degrees C
  • 30,000 Degrees C
  • 33,000 Degrees C
  • 40,000 Degrees C
  • 50,000 Degrees C

Question 3

Question
The most common gas used with gas shielded flux cored arc welding is:
Answer
  • Pure argon
  • Pure helium
  • 75% Ar-25% CO2
  • Argon with 10% Hydrogen

Question 4

Question
The technique used for semi-automatic welding with gas shielded flux cored arc welding is:
Answer
  • Drag (backhand)
  • Push (forehand)

Question 5

Question
Welding equipment for gas shielded flux cored arc welding is essentially the same as for gas metal arc welding.
Answer
  • True
  • False

Question 6

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

Question 7

Question
Constant voltage power source are preferred for SMAW
Answer
  • True
  • False

Question 8

Question
Large diameter electrodes are preferred for welding the root passes in V grooves and for out-of-position welds
Answer
  • True
  • False

Question 9

Question
Constant voltage power source are generally used for GMAW.
Answer
  • True
  • False

Question 10

Question
In the submerged arc welding process, granular flux is placed on the unleaded seam behind the consumable electrode.
Answer
  • True
  • False

Question 11

Question
Fused fluxes are prone to moisture pick up
Answer
  • True
  • False

Question 12

Question
The source of heat in the resistance welding process is:
Answer
  • An electric arc
  • External pressure
  • Resistance of the copper electrode to electron flow
  • Electrical resistance of the workpieces

Question 13

Question
Which of the following arc welding processes is non-consumable electrode type?
Answer
  • GTAW
  • SMAW
  • GMAW
  • FCAW
  • SAW

Question 14

Question
Which of the following arc welding processes is non-consumable electrode type?
Answer
  • SMAW
  • GMAW
  • FCAW
  • SAW
  • PAW

Question 15

Question
The electron beam welding process results in:
Answer
  • 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.

Question 16

Question
In thermite welding, the reaction from which the required heat and molten metal is obtained is called:
Answer
  • Exothermic
  • Duo thermic
  • Interthermic
  • endothermic

Question 17

Question
In electroslag welding, the usual cooling medium used on the copper shoes is:
Answer
  • Dry ice
  • Air
  • Oil
  • Water

Question 18

Question
A welding arc consist of a:
Answer
  • Low current and a high voltage
  • High current and a low voltage
  • High current and a high voltage
  • Low current and a low voltage

Question 19

Question
The heat of the welding arc is used to:
Answer
  • 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

Question 20

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

Question 21

Question
The function of the ingredients in the electrode coating of SMAW electrodes is to:
Answer
  • 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.

Question 22

Question
The temperature for holding low-hydrogen electrodes is:
Answer
  • 30 Degrees C
  • 90 Degrees C
  • 120 Degrees C
  • 430 Degrees C

Question 23

Question
The GMAW Process uses _______________ To shield the molten weld metal from the atmosphere:
Answer
  • A slag system
  • External shielding gas
  • A blanket of flux
  • a vacuum chamber

Question 24

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

Question 25

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

Question 26

Question
SAW fluxes:
Answer
  • 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

Question 27

Question
A major advantage of the electron beam welding process is:
Answer
  • 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
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