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%
The percentage reduction in area of a cast iron specimen during tensile test would be of the order of
A More than 50%
B 25 - 50%
C 10 - 25%
D Negligible
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
Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.
A Manganese
B Phosphorous
C Magnesium
D Chromium
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

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