‘AAluminium alloy
B:-Copper and lead alloy
C-Cadmium based alloy
D-Sintered alloy

Correct Answer: Option-C

QuestionS1:-The process which helps in producing a fine grain for uniformity of structure and for improved mechanical properties is known as

AsTempering
B:-Annealing
C+Hardening

D-Normalizing
Correct Answer:- Option-D
‘QuestionS2::Which one of the following is an alloy of carbon and iron in which carbon in combined state ?
५-५०९।
B:-Wrought iron
(1
1
Correct Answer:- ೦೧000
QuestionS3:-Carbon dissolved in the iron to forma solid solution is called
‘A-Cementite
B:-Ferrite
பரவிட
ட்ப.
படட ೦೧0078.
டட பட்ட is the cooled rapidly the austerite changed in to a new structure called Martensite which property of steel is increase
‘Ac Hardness
B:-Ductility
C-Malleabilty
1
Correct Answer:- ೦೧000
ಟಟ cast iron has the ability to reduce vibration and tool chattering in machine tools ?
கரவு cast iron
B:-White cast iron
८०५५० cast iron
D-Malleable cast iron
Correct Answer:- ೦೧000
QuestionS6::What is the name of heat treatment process for reheating the hardened steel to a temperature below 400 degree centigrade followed by coaling 7
‘Annealing
B:-Hardening
CeTempering
D-Normalizing
Correct Answer: Option-C
QuestionS7:-Why tempering process is carried out in
० add cutting ability
B:To relieve stress and strain
‏ج7ی‎ refine the grain structure
To regulate the hardness and toughness
Correct Answer:- Option-D
QuestionS8:-What is the purpose of brine solution, water, oil and air used in heat treatment process ?
AcSoaking

B:-Quenching