Tempering of steel is done to make it_________________?

Related Mcqs:

1. Tempering of steel is done to make it________________?

   A. Brittle
   B. Hard
   C. Rollable
   D. Soft

2. Softening of hardened steel is done by its_____________________?

   A. Normalising
   B. Tempering
   C. Annealing
   D. Carburising

3. 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.

4. Nitriding of steel is done (in electric furnace) at _____________ °C?

   A. 510
   B. 1720
   C. 2210
   D. 910

5. Mild steel is a/an _____________ steel?

   A. Low carbon
   B. Medium carbon
   C. High carbon
   D. High alloy

6. Steel balls for ball bearings are generally made of ______________ steel?

   A. Cast
   B. Stainless
   C. Free carbon
   D. Carbon chrome

7. Mild steel is a/an ______________ steel?

   A. Low carbon
   B. Medium carbon
   C. High carbon
   D. High alloy

8. Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making___________________?

   A. Nuts
   B. Bolts
   C. Chisels
   D. Studs

9. 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

10. 18/8 steel is a/an __________ stainless steel ?

    A. Austenitic
    B. Ferritic
    C. Martensitic
    D. None of these