A. 510
B. 1720
C. 2210
D. 910
Related Mcqs:
- Nitriding of steel is a process for________________?
A. Case hardening
B. Spheroidising
C. Normalising
D. Annealing - The purpose of nitriding the steel is to___________________?
A. Harden its surface
B. Soften its surface
C. Improve its reliability
D. None of these - Mild steel is a/an _____________ steel?
A. Low carbon
B. Medium carbon
C. High carbon
D. High alloy - Softening of hardened steel is done by its_____________________?
A. Normalising
B. Tempering
C. Annealing
D. Carburising - 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. - Tempering of steel is done to make it________________?
A. Brittle
B. Hard
C. Rollable
D. Soft - Steel balls for ball bearings are generally made of ______________ steel?
A. Cast
B. Stainless
C. Free carbon
D. Carbon chrome - 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 - Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
A. Chromium
B. Nickel
C. Tungsten
D. Cobalt
