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Engineering Materials

Engineering Materials
Taps dies and drills contain carbon

Above 1%
Below 1%
Above 2.2%
Below 0.5%

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Engineering Materials
Manganese is added in low carbon steel to

Make the steel tougher and harder
Raise the yield point
Make the steel ductile and of good bending qualities
All of these

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Engineering Materials
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio

40 : 30 : 20 : 10
50 : 20 : 10 : 20
30 : 20 : 30 : 20
50 : 20 : 20 : 10

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Engineering Materials
The usual composition of a soldering alloy is

Tin, lead and silver
Tin and copper
Tin, lead and small percentage of antimony
Tin and lead

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Engineering Materials
Nodular iron has

Low melting point
All of these
High tensile strength
High machinability

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Engineering Materials
A cold chisel is made of

Cast iron
High carbon
Mild steel
H.S.S.

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