Related Questions

Percentage reduction in area performing tensile test on cast iron may be of the order of
A 50%
B 25%
C 20%
D 30%
Percentage reduction of area in performing tensile test on cast iron may be of the order of
A 50%
B 25%
C 0%
D 15%
The ductility of a material __________ with the increase in percentage reduction in area of a specimen under tensile test.
A Increases
B Decreases
C Remains same
D None of these
In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is
A More
B Less
C Same
D More/less depending on composition
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.
A Cementite
B Free graphite
C Both A and B
D None of these
White cast iron as compared to grey cast iron is
A More durable
B Very brittle
C Very hard
D All of the above
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of
A Brown colour
B Yellow colour
C White colour
D Grey colour
Nodular cast iron is produced by adding ________ to the molten cast iron.
A Nickel
B Chromium
C Copper
D Magnesium
An important property of malleable cast iron in comparison to grey cast iron is the high
A Compressive strength
B Ductility
C Carbon content
D Hardness
__________ of grey cast iron produces white cast iron.
A Tempering
B Rapid heating
C Rapid cooling
D Slow cooling

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