Bell metal contains_____________________?

A. 70% copper and 30% zincB. 90% copper and 10% tinC. 85-92% copper and rest tin with little lead and nickelD. 70-75% copper and rest tinE. 70-75% copper and rest zinc and tin

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The correct sequence for descending order of machinability is _____________________?

A. grey cast iron, low carbon steel, wrought ironB. low carbon steel, grey cast iron, wrought ironC. wrought iron,low carbon steel, grey cast ironD. wrought iron, grey cast iron, low carbon steelE. grey…

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Aluminium bronze contains aluminium and copper in the ratio of___________________?

A. 50 : 50B. 40 : 60C. 60 : 40D. 10 : 90E. 90 : 10

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Muntz metal contains copper and zinc in the ratio of________________?

A. 50 : 50B. 40 : 60C. 60 : 40D. 20 : 80E. 80 : 20

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Perminvar alloy having constant permeability is an alloy of________________?

A. nickel, copper and ironB. nickel, copper and zincC. copper, nickel and antimonyD. iron, zinc and bismuthE. antimony, copper and zinc

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Monel metal contains_________________?´┐╝´┐╝

A. 63 to 67% nickel and 30% copperB. 88% copper and 10% tin and rest zincC. alloy of tin, lead and cadmiumD. malleable iron and zincE. none of the above

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duralumin material contains___________________?

A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and FeB. 92.5% aluminium, 40% copper, 2% nickel, and 1.5% MgC. 10% aluminium and 90% copperD. 90% magnesium and 9% aluminium with some…

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Phosphor bronze contains____________________?

A. 0.5% of phosphorousB. 1% phosphorousC. 2.5% phosphorousD. 5% phosphorousE. none of the above

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Delta metal is an alloy of__________________?

A. copper, zinc and ironB. iron, nickel and copperC. iron, lead and tinD. iron, aluminium and magnesiumE. copper, zinc and antimony

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Which of the following alloys does not contain tin_________________?

A. white metalB. solder admiraltyC. fusible metalD. phosphor bronzeE. gun metal

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