Welding Processes and Consumables SMAW

Question 1 of 20

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When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:

Select one of the following:

  • Cellulosic

  • Iron Oxide

  • Acid

  • Basic

Question 2 of 20

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When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:

Select one of the following:

  • Cellulosic

  • Iron Oxide

  • Acid

  • Basic

Question 3 of 20

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You would certainly recognize a hydrogen controlled flux electrode from its:

Select one of the following:

  • Colour

  • Length

  • Trade Name

  • BS639/AWS Code Letter

Question 4 of 20

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You 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:

Select one of the following:

  • It is too expensive

  • The wire would be too thick

  • The metal composition may be wrong

  • The wire is too short

Question 5 of 20

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For open site manual metal welding the following equipment is available. Which would you choose for safe site working?

Select one of the following:

  • Single operator transformer

  • multi-operator transformer

  • AC/DC composition power unit

  • Diesel engine driven motor generator

Question 6 of 20

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In MMA welding what parameter is used for control of penetration into the base metal?

Select one of the following:

  • Voltage

  • Welding speed

  • iron powders in the coating

  • Current

Question 7 of 20

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What type of characteristic is required for manual welding?

Select one of the following:

  • Constant voltage

  • flat characteristic

  • Drooping characteristic

  • DC generator

Question 8 of 20

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The weld metal deposit for MMA electrodes achieves its mechanical strength through:

Select one of the following:

  • The core wire

  • The flux coating

  • Iron powders with the flux coating

  • None of the above

Question 9 of 20

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What constituent is needed in the coating of an electrode to prevent the formation of porosity in the welding of a rimming steel?

Select one of the following:

  • Iron powders

  • Calcium florid

  • Silicon

  • calcium carbonate

Question 10 of 20

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Cellulose electrodes are often used when welding the root pass of pipes in the field because:

Select one of the following:

  • Hydrogen control is needed

  • There are iron powders in the electrode

  • Higher arc voltage can be obtained

  • Shorter arc length can be obtained

Question 11 of 20

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MMA electrodes can be grouped into three main types:

Select one of the following:

  • Basic, cellulose and rutile

  • Neutral, cellulose and rutile

  • None of the above

Question 12 of 20

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Movement of the arc in MMA welding by magnetic forces is called:

Select one of the following:

  • Arc deviation

  • Arc misalignment

  • Arc blow

  • Arc eye

Question 13 of 20

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Which of the following coatings is associated with welding?

Select one of the following:

  • Rutile

  • Cellulose

  • Basic

  • Oxodizing

  • A,B,C

Question 14 of 20

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The voltage necessary to maintain an arc during metal arc welding is termed:

Select one of the following:

  • Main supply voltage

  • arc current

  • Arc Voltage

  • Open circuit voltage

Question 15 of 20

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When MMA welding low carbon steel which electrode which electrode will give the greatest deposition rate?

Select one of the following:

  • Hydrogen controlled

  • cellulose

  • rutile

  • Iron powder

Question 16 of 20

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Hydrogen controlled electrodes were developed principally for:

Select one of the following:

  • The prevention of porosity

  • The prevention of cracking

  • The enhancement of arc voltage

  • There ease of arc starting

Question 17 of 20

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A basic electrode would normally:

Select one of the following:

  • Have superior mechanical properties

  • Require baking before use

  • Not to be used on low carbon steels

  • Both A and B

Question 18 of 20

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MMA welding of low alloy steels is more likely to be performed with:

Select one of the following:

  • Rutile electrodes

  • Cellulose electrodes

  • Iron powder electrodes

  • Basic hydrogen controlled electrodes

Question 19 of 20

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When manual metal arc welding low carbon steel, which electrode covering will give the greatest degree of penetration?

Select one of the following:

  • Iron powder

  • Rutile

  • Cellulose

  • Low hydrogen

Question 20 of 20

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MMA welds made with damaged electrode coatings are subject to:

Select one of the following:

  • Porosity

  • Undercut

  • Excessive penetration

  • Excessive bead hieght

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Welding Processes and Consumables SMAW

nixlourens
Quiz by , created over 2 years ago

Welding Inspection Welding Inspection Quiz on Welding Processes and Consumables SMAW, created by nixlourens on 09/06/2014.

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Created by nixlourens over 2 years ago
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