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Welding Processes and Consumables SMAW

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Welding Inspection Welding Inspection Quiz on Welding Processes and Consumables SMAW, created by nixlourens on 09/06/2014.
nixlourens
Quiz by nixlourens, updated more than 1 year ago
nixlourens
Created by nixlourens over 10 years ago
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Resource summary

Question 1

Question
When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:
Answer
  • Cellulosic
  • Iron Oxide
  • Acid
  • Basic

Question 2

Question
When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:
Answer
  • Cellulosic
  • Iron Oxide
  • Acid
  • Basic

Question 3

Question
You would certainly recognize a hydrogen controlled flux electrode from its:
Answer
  • Colour
  • Length
  • Trade Name
  • BS639/AWS Code Letter

Question 4

Question
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:
Answer
  • It is too expensive
  • The wire would be too thick
  • The metal composition may be wrong
  • The wire is too short

Question 5

Question
For open site manual metal welding the following equipment is available. Which would you choose for safe site working?
Answer
  • Single operator transformer
  • multi-operator transformer
  • AC/DC composition power unit
  • Diesel engine driven motor generator

Question 6

Question
In MMA welding what parameter is used for control of penetration into the base metal?
Answer
  • Voltage
  • Welding speed
  • iron powders in the coating
  • Current

Question 7

Question
What type of characteristic is required for manual welding?
Answer
  • Constant voltage
  • flat characteristic
  • Drooping characteristic
  • DC generator

Question 8

Question
The weld metal deposit for MMA electrodes achieves its mechanical strength through:
Answer
  • The core wire
  • The flux coating
  • Iron powders with the flux coating
  • None of the above

Question 9

Question
What constituent is needed in the coating of an electrode to prevent the formation of porosity in the welding of a rimming steel?
Answer
  • Iron powders
  • Calcium florid
  • Silicon
  • calcium carbonate

Question 10

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

Question
MMA electrodes can be grouped into three main types:
Answer
  • Basic, cellulose and rutile
  • Neutral, cellulose and rutile
  • None of the above

Question 12

Question
Movement of the arc in MMA welding by magnetic forces is called:
Answer
  • Arc deviation
  • Arc misalignment
  • Arc blow
  • Arc eye

Question 13

Question
Which of the following coatings is associated with welding?
Answer
  • Rutile
  • Cellulose
  • Basic
  • Oxodizing
  • A,B,C

Question 14

Question
The voltage necessary to maintain an arc during metal arc welding is termed:
Answer
  • Main supply voltage
  • arc current
  • Arc Voltage
  • Open circuit voltage

Question 15

Question
When MMA welding low carbon steel which electrode which electrode will give the greatest deposition rate?
Answer
  • Hydrogen controlled
  • cellulose
  • rutile
  • Iron powder

Question 16

Question
Hydrogen controlled electrodes were developed principally for:
Answer
  • The prevention of porosity
  • The prevention of cracking
  • The enhancement of arc voltage
  • There ease of arc starting

Question 17

Question
A basic electrode would normally:
Answer
  • Have superior mechanical properties
  • Require baking before use
  • Not to be used on low carbon steels
  • Both A and B

Question 18

Question
MMA welding of low alloy steels is more likely to be performed with:
Answer
  • Rutile electrodes
  • Cellulose electrodes
  • Iron powder electrodes
  • Basic hydrogen controlled electrodes

Question 19

Question
When manual metal arc welding low carbon steel, which electrode covering will give the greatest degree of penetration?
Answer
  • Iron powder
  • Rutile
  • Cellulose
  • Low hydrogen

Question 20

Question
MMA welds made with damaged electrode coatings are subject to:
Answer
  • Porosity
  • Undercut
  • Excessive penetration
  • Excessive bead hieght
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