Test
Welding Processes and Consumables SMAW
Preguntas del test (20)
1When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:
- ACellulosic
- BIron Oxide
- CAcid
- DBasic
2When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:
- ACellulosic
- BIron Oxide
- CAcid
- DBasic
3You would certainly recognize a hydrogen controlled flux electrode from its:
- AColour
- BLength
- CTrade Name
- DBS639/AWS Code Letter
4You notice manual metal arc electrodes are being, stripped of flux, are being used as a filler metal wire for TIG welding. You would object because:
- AIt is too expensive
- BThe wire would be too thick
- CThe metal composition may be wrong
- DThe wire is too short
5For open site manual metal welding the following equipment is available. Which would you choose for safe site working?
- ASingle operator transformer
- Bmulti-operator transformer
- CAC/DC composition power unit
- DDiesel engine driven motor generator
6In MMA welding what parameter is used for control of penetration into the base metal?
- AVoltage
- BWelding speed
- Ciron powders in the coating
- DCurrent
7What type of characteristic is required for manual welding?
- AConstant voltage
- Bflat characteristic
- CDrooping characteristic
- DDC generator
8The weld metal deposit for MMA electrodes achieves its mechanical strength through:
- AThe core wire
- BThe flux coating
- CIron powders with the flux coating
- DNone of the above
9What constituent is needed in the coating of an electrode to prevent the formation of porosity in the welding of a rimming steel?
- AIron powders
- BCalcium florid
- CSilicon
- Dcalcium carbonate
10Cellulose electrodes are often used when welding the root pass of pipes in the field because:
- AHydrogen control is needed
- BThere are iron powders in the electrode
- CHigher arc voltage can be obtained
- DShorter arc length can be obtained
11MMA electrodes can be grouped into three main types:
- ABasic, cellulose and rutile
- BNeutral, cellulose and rutile
- CNone of the above
12Movement of the arc in MMA welding by magnetic forces is called:
- AArc deviation
- BArc misalignment
- CArc blow
- DArc eye
13Which of the following coatings is associated with welding?
- ARutile
- BCellulose
- CBasic
- DOxodizing
- EA,B,C
14The voltage necessary to maintain an arc during metal arc welding is termed:
- AMain supply voltage
- Barc current
- CArc Voltage
- DOpen circuit voltage
15When MMA welding low carbon steel which electrode which electrode will give the greatest deposition rate?
- AHydrogen controlled
- Bcellulose
- Crutile
- DIron powder
16Hydrogen controlled electrodes were developed principally for:
- AThe prevention of porosity
- BThe prevention of cracking
- CThe enhancement of arc voltage
- DThere ease of arc starting
17A basic electrode would normally:
- AHave superior mechanical properties
- BRequire baking before use
- CNot to be used on low carbon steels
- DBoth A and B
18MMA welding of low alloy steels is more likely to be performed with:
- ARutile electrodes
- BCellulose electrodes
- CIron powder electrodes
- DBasic hydrogen controlled electrodes
19When manual metal arc welding low carbon steel, which electrode covering will give the greatest degree of penetration?
- AIron powder
- BRutile
- CCellulose
- DLow hydrogen
20MMA welds made with damaged electrode coatings are subject to:
- APorosity
- BUndercut
- CExcessive penetration
- DExcessive bead hieght
Información
- Descripción
- Welding Inspection Welding Inspection Test sobre Welding Processes and Consumables SMAW, creado por nixlourens el 09/06/2014.
- Autor
- nixlourens
- Idioma
- English
- Visitas
- 482
- Etiquetas
- Valoración
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