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.Management Sciences
Category: Engineering Materials
Which is false statement about normalizing. Normalizing is done to _________________?
A. refine grain structure
B. reduce segregation in casting
C. improve mechanical properties
D. induce stresses-
E. relieve internal stresses
Connecting rod is usually made of_________________?
A. aluminium
B. low carbon steel
C. medium carbon steel
D. high carbon steel
E. cast iron
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is _______________?
A. 770°C
B. 910°C
C. 1050°C
D. below recrystallisation temperature
E. above recrystallization temperature
The molecules in a solid move______________?
A. in a random manner
B. in a haphazard way
C. in circular motion
D. back and forth like tiny pendulums
E. do not move
Taps, dies and drills contain carbon________________?
A. below 0.5%
B. below 1%
C. above 1%
D. above 2.2%
E. nil
In malleable iron, carbon is present in the form of___________________?
A. cementite
B. free carbon
C. flakes
D. spheroids
E. nodular aggregates of graphite
Annealing of white cast iron results in production of_________________?
A. malleable iron
B. nodular iron
C. spheroidal iron
D. grey iron
E. none of the above
The unique property of cast iron is its high ___________________?
A. malleability
B. ductility
C. surface finish
D. damping characteristics
E. hardness
Cast iron is characterised by minimum of following %age of carbon_________________?
A. 0.2%
B. 0.8%
C. 1.3%
D. 2%
E. 6.3%.
Basic constituents of Monel metal are _________________?
A. nickel, copper
B. nickel, molybdenum
C. zinc, tin, lead
D. nickel, lead and tin
E. none of the above
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