Insufficient hardness after tempering may be due to

Metallurgy Mcqs
BILAL KHATTAK0

A.tempering temperature too low
B.tempering temperature too high
C.oxidising atmosphere in the furnace
D.Any of the above

Related Mcqs:

  1. If a sample of steel shown excessive hardness after tempering the probable cause could be
  2. If an article develops insufficient hardening after quenching it could be due to any of the following EXCEPT:
  3. If an article develops insufficient hardening after quenching, the defect can be corrected by
  4. Blast furnace gas is
  5. What is an Incinerator?
  6. During heat treatment quenching cracks occur due to
  7. The furnace used for castings of cast iron in a foundry shop is known as
  8. Which of the following furnace is used for steel only?
  9. The atmospheric greenhouse effect is produced mainly by the __________?
  10. Night time temperatures rarely drop below the dew point temperature because __________?

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