Quiz
CWB - Module 4 ( Welding Processes an Equipment)
Perguntas do quiz (27)
1Welding is a joining process that by definition requires the application of:
- Aboth heat and pressure
- Beither heat or pressure
- Cboth heat and filler metal
- Dboth pressure and filler metal
- Eall of the above
2In arc welding, the electric arc is intensely hot with temperatures exceeding:
- A20,000 Degrees C
- B30,000 Degrees C
- C33,000 Degrees C
- D40,000 Degrees C
- E50,000 Degrees C
3The most common gas used with gas shielded flux cored arc welding is:
- APure argon
- BPure helium
- C75% Ar-25% CO2
- DArgon with 10% Hydrogen
4The technique used for semi-automatic welding with gas shielded flux cored arc welding is:
- ADrag (backhand)
- BPush (forehand)
5Welding equipment for gas shielded flux cored arc welding is essentially the same as for gas metal arc welding.
- AVerdadeiro
- BFalso
6Gas shielded flux cored wires with basic ingredients in the core are ideally suited for out-of-position welding
- AVerdadeiro
- BFalso
7Constant voltage power source are preferred for SMAW
- AVerdadeiro
- BFalso
8Large diameter electrodes are preferred for welding the root passes in V grooves and for out-of-position welds
- AVerdadeiro
- BFalso
9Constant voltage power source are generally used for GMAW.
- AVerdadeiro
- BFalso
10In the submerged arc welding process, granular flux is placed on the unleaded seam behind the consumable electrode.
- AVerdadeiro
- BFalso
11Fused fluxes are prone to moisture pick up
- AVerdadeiro
- BFalso
12The source of heat in the resistance welding process is:
- AAn electric arc
- BExternal pressure
- CResistance of the copper electrode to electron flow
- DElectrical resistance of the workpieces
13Which of the following arc welding processes is non-consumable electrode type?
- AGTAW
- BSMAW
- CGMAW
- DFCAW
- ESAW
14Which of the following arc welding processes is non-consumable electrode type?
- ASMAW
- BGMAW
- CFCAW
- DSAW
- EPAW
15The electron beam welding process results in:
- Awide, deep-penetrating welds and heat-affected zones.
- Bnarrow, deep-penetrating welds and heat-affected zones.
- CNarrow, shallow-penetrating welds and heat-affected zones.
- Dwide, shallow-penetrating welds and heat-affected zones.
16In thermite welding, the reaction from which the required heat and molten metal is obtained is called:
- AExothermic
- BDuo thermic
- CInterthermic
- Dendothermic
17In electroslag welding, the usual cooling medium used on the copper shoes is:
- ADry ice
- BAir
- COil
- DWater
18A welding arc consist of a:
- ALow current and a high voltage
- BHigh current and a low voltage
- CHigh current and a high voltage
- DLow current and a low voltage
19The heat of the welding arc is used to:
- ALocally melt the base material and filler material to create fusion upon solidification
- BHeat the base material and melt the filler material to form a surface bond between the two materials
- CHeat the materials to be jointed before the application of pressure
- DPromote a metallurgical reaction resulting in the bonding of the adjoining materials
20Welding using the GTAW process with current set to DCEN (Direct Current Electrode Negative) results in:
- A30% arc heat at the electrode and 70% arc heat at the work.
- B70% arc heat at the electrode and 30% arc heat at the work
- C40% arc heat at the electrode and 60% arc heat at the work
- D60% arc heat at the electrode and 40% arc heat tat the work
21The function of the ingredients in the electrode coating of SMAW electrodes is to:
- AProvide a gas shield, slag covering, scavengers, arc stabilization and additional alloying elements.
- BReact with the base metal to assist in the weld fusion
- CRemove rust, mill scale and other contaminants from the surface of the joint.
- DCounteract the effects of arc blow.
22The temperature for holding low-hydrogen electrodes is:
- A30 Degrees C
- B90 Degrees C
- C120 Degrees C
- D430 Degrees C
23The GMAW Process uses _______________ To shield the molten weld metal from the atmosphere:
- AA slag system
- BExternal shielding gas
- CA blanket of flux
- Da vacuum chamber
24Flux cored arc welding is a welding process usually used in the semi-automatic mode consisting of:
- AA constant current power supply, a continuos wire feeder, a welding gun, and a continuos solid filler metal electrode
- BA 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
- CA 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
- DA 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
25For a flat weld profile and good penetration profile using the metal cored arc welding process (MCAW), a travel angle of:
- A20 Degrees using a drag technique should be used
- B10 Degrees using a drag technique should be used
- C15 Degrees using a push technique should be used
- D30 Degrees using a push technique should be used
26SAW fluxes:
- AAre classified, each with its own separate designation
- BAre not classified. Only the wire is classified
- CAre classified in conjunction with the welding wire forming a flux-wire designation
- DAre all classified with EM12K wire. Used with other wires would require companies to perform testing to verify desired properties
27A major advantage of the electron beam welding process is:
- ALow equipment cost and ease of use
- BHigh speed welding of thin materials
- CFit-up of joints does not have to be precise
- DFull penetration welds on thick materials in one pass
Informações
- Descrição
- This quiz focuses on Module number 4 for welding inspections Level 1
- Autor
- Freddy Bueno
- Idioma
- English
- Visualizações
- 727
- Etiquetas
- Avaliação
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