WorksheetsSMAW Quiz 1
Total questions: 20
Worksheet time: 10mins
What is electrical characteristic of constant current in SMAW?
A large voltage change of arc can result large change of arc current
Voltage changes of arc result arc current change linearly
A large voltage change of arc can result small change of arc current
There is no relation of arc voltage change to arc current change
Which one is not name of SMAW?
Submerged Metal Arc Welding
Shielded Metal Arc Welding
Stick welding
Manual Metal Arc Welding
Which statement is true about DCEN?
It has negative charge/pole on welding electrode
It is called reversed polarity
Its arc uses alternating current
It has negative charge/pole on workpiece/base metal
Electrode polarity which produces deepest penetration is .....
DCEP
DCSP
AC
DCEN
Which statement is true about characteristic of SMAW electrode?
The filler metal is in form of rolled wire without welding flux
There is welding flux inside of electrode wire
The process needs filler metal of rolled wire and welding flux powder
The filler metal rod is covered by welding flux
In SMAW machine, welders adjust .....
Welding current
Welding voltage
Welding travel speed
Welding wire feed speed
Which one is limitation of SMAW?
It has 60% efficiency
It can be used in all position welding
It is easily to move (portable)
It can be used to weld various material
Mix of molten base metal, filler metal, and flux during welding is called as .....
Arc
Welding electrode
Arc blow
Weld pool
Which factor influence heat input?
Welding current and arc length
Welding current and travel speed
Electrode type and welding current
Welding voltage and material type
Which statement in not correct about flux function in SMAW?
It produces gas to protect weld pool from gas in atmosphere such as oxygen, nitrogen, hydrogen
It provides added element to increase mechanical property of welded joint
It produces slag to protect weld metal from contamination of atmosphere gas and slower cooling rate
It produces increasing arc voltage and hotter welding arc
Which is not type of SMAW electrode?
Tungsten electrode
Cellulose electrode
Rutile electrode
Basic electrode
Which statement is correct about E7016?
It is considered as cellulose electrode
Its filler metal has 70,000 psi tensile strength
It cannot be use for vertical welding position
It can be used for argon welding
Suitable electrode for fabrication high pressure vessel which need high toughness weld
E7016
E6010
E6013
E7014
Why electrode is baked at 350 °C?
To ease welder to start arc
To increase toughness of weld
To remove water vapour in flux
To remove hydrogen in flux
What is SMAW electrode size?
Flux diameter
Filler metal length
Base metal thickness
Filler metal diameter
What SMAW welder do when using bigger electrode size?
Increasing voltage
Decreasing voltage
Increasing current
Decreasing current
What is space between electrode tip and base metal which welder must keep it constant?
Shielding gas
Arc length
Slag
Arc blow
Burn through (workpiece is melted into hole) can be occur due to ...
Faster travel speed
Too low voltage
Too small heat input
Too high current
What gas is used as shielding in SMAW?
Carbon dioxide
Argon
Argon/Carbon dioxide mix
SMAW does not need shielding gas
What is portable oven which used by welder to reduce the oxide in a thick layer?
Holding oven
Baking oven
Quiver
Heater
