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

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

a) 50 : 20 : 20 : 10

b) 40 : 30 : 20 : 10

c) 50 : 20 : 10 : 20

d) 30 : 20 : 30 : 20

Engineering Materials Practice Set-3