In cold working of metals
AClose dimensional tolerance cannot be maintained
BPoor surface finish is obtained
CRecrystallization temperature for steel is reduced
DStrength and hardness of steel is increased
ESAS · Question Bank
Engineering Materials
231 of 241 questions match · page 12 of 12. Answer in your head first, then check the solution.
What do you call earth and stone mixed with the iron oxides?
AHematite
BMagnetite
CGangue
DOre
The term “bronze” is used to designate any alloy containing
ACopper and zinc
BCopper and aluminium
CCopper and nickel
DCopper and tin
What do you call the removal of zinc from brasses?
ADezincification
BGraphitization
CStabilization
DDealloying
Steels can be strengthened by all of the following EXCEPT
AAnnealing
BQuenching and tempering
CWork hardening
DGrain refinement
Which of the following metals has the highest melting point?
ACopper
BGold
CSilver
DTungsten
The inner strand of ACSR is made of
ABrass
BSteel
CCopper
DLead
Aluminum alloys find ue in aircraft industry because of
AHigh strength
BLow sp. Gravity
CGood corrosion resistance
DGood weldability
The most effective alloying ingredient in increasing hardness is known as
ABoron
BSilicon
CSilver
DSodium
The simplest and most common grades of steel belong to the group of
ABoron steels
BCarbon steels
CNeon steels
DKrypton steels
Which cast iron is hard and wear resistant?
AGray iron
BDuctile iron
CWhite iron
DMalleable iron