A. Normalising
B. Tempering
C. Annealing
D. Carburising
Related Mcqs:
- Which of the following heat treatment processes is used for softening the hardened material ?
A. Normalising
B. Tempering
C. Annealing
D. None of these - Hardened steel is softened by___________________?
A. Normalising
B. Tempering
C. Annealing
D. Carburising - A hardened steel essentially contains___________________?
A. Sorbite
B. Troostite
C. Martensite
D. None of these - To improve the machinability of steel by its softening, it is subjected to __________________?
A. Cold working
B. Annealing
C. Shot blasting
D. Heating - Tempering of steel is done to make it_________________?
A. Brittle
B. Hard
C. Rollable
D. Soft - Galvanising (i.e., zinc coating) of steel sheets is done to______________________?
A. Prevent its rusting by contact with corrosive atmosphere
B. Protect the base metal by cathodic protection
C. Both A. & B.
D. Neither A. nor B. - Nitriding of steel is done (in electric furnace) at _____________ °C?
A. 510
B. 1720
C. 2210
D. 910 - Tempering of steel is done to make it________________?
A. Brittle
B. Hard
C. Rollable
D. Soft - Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
A. Armature of small motors/generators
B. Generators and small motors
C. Induction motors
D. High frequency transformers - 18/8 steel is a/an __________ stainless steel ?
A. Austenitic
B. Ferritic
C. Martensitic
D. None of these
