Crack in grinding wheel is developed due to

  • AHigh temperature developed at the contact of the wheel face and work
  • BGrinding hard work
  • CLow speed of wheel
  • DHigh speed of wheel
Correct Answer : (D)

High speed of wheel

Hints :

High speed steel tools retain their hardness up to a temperature of


For machining a mild steel work piece using carbide tool, the maximum material will be removed at a temperature of

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