An example of amorphous material is____________?
An example of amorphous material is____________?
A. zinc
B. lead
C. silver
D. glass
E. brass
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Muntz metal (Yellow brass) contains
Question: Muntz metal (Yellow brass) contains
[A].70% copper and 30% zinc [B].
60% copper and 40% zinc [C].
59% copper, 40% zinc and 1% tin [D].
60.45% copper, 35.2% zinc and 5.35% nickel Answer: Option B
Explanation:
No answer description available for this question.
In process annealing, the hypo-eutectoid steel is
Question: In process annealing, the hypo-eutectoid steel is
[A].heated from 30° C to 50° C above the upper critical temperature and then cooled in still air [B].
heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium [C].
heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace [D].
heated below or close to the lower critical temperature and then cooled slowly Answer: Option D
Explanation:
No answer description available for this question.
Perminvar alloy having constant permeability is an alloy of________________?
Perminvar alloy having constant permeability is an alloy of________________?A. nickel, copper and iron
B. nickel, copper and zinc
C. copper, nickel and antimony
D. iron, zinc and bismuth
E. antimony, copper and zincMachining properties of steel are improved by adding___________________?
Machining properties of steel are improved by adding___________________?A. sulphur, lead, phosphorous
B. silicon, aluminium, titanium
C. vanadium, aluminium
D. chromium, nickel
E. lubricantsSulphur in pig iron tends to make it___________________?
Sulphur in pig iron tends to make it___________________?A. hard’
B. soft
C. ductile
D. tough
E. malleableThe correct composition of Babbit metal is__________________?
The correct composition of Babbit metal is__________________?A. 87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi
B. 90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg
C. 87% Sn, 4% Cu, 8% Sb, 1% Al
D. 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg
E. none of the above