Quench cracks: A) Appear blackened and run toward the center ...

[kwoodring]

Quench cracks:
 
  A) Appear blackened and run toward the center of the part
  B) Cause the piece to crumble into small granules
  C) Appear as a chicken wire network
  D) None of the above

Question 2

What is the purpose of a thread relief groove for internal threading?
 
  A) To take pressure off the cutting tool
  B) To prevent breaking a tap
  C) Stress relieve the part being threaded
  D) To provide a place for the tool to pass out of the thread

[stillxalice]

Answer to Question 1

A

Answer to Question 2

D