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WorksheetsMETAL ALLOYS, FABRICATION OF METALS & CORROSION
Total questions: 15
Worksheet time: 9mins
_________is a process of metal reduction from the conditions that can be used to the conditions that cannot be used.
Corrosion
Vibration
Tension
Pollution
Which of the following is TRUE about dry corrosion?
Also known as direct oxidation corrosion.
Also known as electrochemical corrosion.
Causes metal to damage slowly but effectively.
Involves the position of metal in the electrochemical series.
Wet corrosion would only occur with the presence of __________.
heat
electricity
moisture
air
Listed below are non- ferrous metals EXCEPT
aluminium
zinc
hydrogen
copper
Listed below are the types of cast iron EXCEPT
grey cast iron
white cast iron
black cast iron
nodular cast iron
The characteristics of stainless steel are determined by __________
resistance
high stress
cobalt content
chromium content
What is the application of cast iron?
Car body
Engine blocks
Bridge
Hammer
Commercially pure iron contains up to 0.008% C and steel up to 2% C. What are the carbon content in Cast Iron?
More than 2% C
Up to 4% C
Up to 10% C
Up to 7% C
Which of the following statement below is an example of corrosion remedial action in designs?
Bolts and rivets should be replaced by proper welding.
Use of corrosion resistant alloy.
Plastic and oil are use mainly for coatings.
Chromium is added to the steel to enhance its corrosion resistant properties.
Low alloy steel can be listed as below EXCEPT
Medium carbon steel
High carbon steel
Moderate carbon steel
Low carbon steel
Hot working refer to the processes where metals are plastically deformed (a) their recrystallization temperature.
Cold working refer to the processes where metals are plastically deformed (a) their recrystallization temperature.
Listed below are hot work EXCEPT
forging
extrusion
drawing
hot rolling
Figure above shows the process of _________
Metal rolling
Metal drawing
Forging
Extrusion
Investment casting also known as Lost wax casting.
TRUE
FALSE
