Magnesium and its Alloys-1 Online Exam Quiz
Magnesium and its Alloys-1 GK Quiz. Question and Answers related to Magnesium and its Alloys-1. MCQ (Multiple Choice Questions with answers about Magnesium and its Alloys-1
Magnesium is found in only two ores in the world.
Options
A : TRUE
B : FALSE
C : -
D : -
Magnesium is frequently found in its natural state.
Options
A : TRUE
B : FALSE
C : -
D : -
Materials with __ are typically used in aircraft construction.
Options
A : no strain
B : lower strength/weight ratio
C : average strength/weight ratio
D : higher strength/weight ratio
Pure magnesium weighs around ___ of aluminium.
Options
A : 98%
B : 2%
C : 39%
D : 65%
The specific gravity of magnesium is __
Options
A : 1.8
B : 7.9
C : 2.7
D : 13.8
Using materials with good joining properties is an advantage.
Options
A : TRUE
B : FALSE
C : -
D : -
Which of the following are frequently found impurities in magnesium alloys?
Options
A : Copper, vanadium
B : Aluminium, nickel
C : Nickel, iron
D : Nickel, Indium
Which of the following is not a property of aluminium that makes it ideal to use as an aircraft material?
Options
A : Resistance to corrosion
B : Light in weight
C : High fuel consumption
D : High strength alloy
Which of the following methods would be helpful if a material that is not resistant to corrosion is used?
Options
A : Painting a protective layer
B : Heating to 10?F
C : Increase the quantity of material
D : Disjoining
Why is low thermal conductivity important for aircraft systems?
Options
A : To increase the strength of the material
B : To protect from excessive heating
C : To keep aircraft warm for passengers
D : For oxygen
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