987577
Descrição
Quiz por nixlourens, atualizado more than 1 year ago
|
Criado por nixlourens
aproximadamente 10 anos atrás
|
|
Questão 1
Questão
When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:
Responda
-
Cellulosic
-
Iron Oxide
-
Acid
-
Basic
Questão 2
Questão
When "Hydrogen Control" is specified for a manual metal arc welding project the electrode would normally be:
Responda
-
Cellulosic
-
Iron Oxide
-
Acid
-
Basic
Questão 3
Questão
You would certainly recognize a hydrogen controlled flux electrode from its:
Responda
-
Colour
-
Length
-
Trade Name
-
BS639/AWS Code Letter
Questão 4
Questão
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:
Responda
-
It is too expensive
-
The wire would be too thick
-
The metal composition may be wrong
-
The wire is too short
Questão 5
Questão
For open site manual metal welding the following equipment is available. Which would you choose for safe site working?
Responda
-
Single operator transformer
-
multi-operator transformer
-
AC/DC composition power unit
-
Diesel engine driven motor generator
Questão 6
Questão
In MMA welding what parameter is used for control of penetration into the base metal?
Responda
-
Voltage
-
Welding speed
-
iron powders in the coating
-
Current
Questão 7
Questão
What type of characteristic is required for manual welding?
Responda
-
Constant voltage
-
flat characteristic
-
Drooping characteristic
-
DC generator
Questão 8
Questão
The weld metal deposit for MMA electrodes achieves its mechanical strength through:
Responda
-
The core wire
-
The flux coating
-
Iron powders with the flux coating
-
None of the above
Questão 9
Questão
What constituent is needed in the coating of an electrode to prevent the formation of porosity in the welding of a rimming steel?
Responda
-
Iron powders
-
Calcium florid
-
Silicon
-
calcium carbonate
Questão 10
Questão
Cellulose electrodes are often used when welding the root pass of pipes in the field because:
Responda
-
Hydrogen control is needed
-
There are iron powders in the electrode
-
Higher arc voltage can be obtained
-
Shorter arc length can be obtained
Questão 11
Questão
MMA electrodes can be grouped into three main types:
Responda
-
Basic, cellulose and rutile
-
Neutral, cellulose and rutile
-
None of the above
Questão 12
Questão
Movement of the arc in MMA welding by magnetic forces is called:
Responda
-
Arc deviation
-
Arc misalignment
-
Arc blow
-
Arc eye
Questão 13
Questão
Which of the following coatings is associated with welding?
Responda
-
Rutile
-
Cellulose
-
Basic
-
Oxodizing
-
A,B,C
Questão 14
Questão
The voltage necessary to maintain an arc during metal arc welding is termed:
Responda
-
Main supply voltage
-
arc current
-
Arc Voltage
-
Open circuit voltage
Questão 15
Questão
When MMA welding low carbon steel which electrode which electrode will give the greatest deposition rate?
Responda
-
Hydrogen controlled
-
cellulose
-
rutile
-
Iron powder
Questão 16
Questão
Hydrogen controlled electrodes were developed principally for:
Responda
-
The prevention of porosity
-
The prevention of cracking
-
The enhancement of arc voltage
-
There ease of arc starting
Questão 17
Questão
A basic electrode would normally:
Responda
-
Have superior mechanical properties
-
Require baking before use
-
Not to be used on low carbon steels
-
Both A and B
Questão 18
Questão
MMA welding of low alloy steels is more likely to be performed with:
Responda
-
Rutile electrodes
-
Cellulose electrodes
-
Iron powder electrodes
-
Basic hydrogen controlled electrodes
Questão 19
Questão
When manual metal arc welding low carbon steel, which electrode covering will give the greatest degree of penetration?
Responda
-
Iron powder
-
Rutile
-
Cellulose
-
Low hydrogen
Questão 20
Questão
MMA welds made with damaged electrode coatings are subject to:
Responda
-
Porosity
-
Undercut
-
Excessive penetration
-
Excessive bead hieght
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.