The operation of making a cone-shaped enlargement of the end of a hole is known as Options: A . &nbspCounter-sinking B . &nbspCounter-boring C . &nbspTrepanning D . &nbspSpot facing

The operation of making a cone-shaped enlargement of the end of a hole is known

Question - The operation of making a cone-shaped enlargement of the end of a hole is known as

Options:

A . Counter-sinking

B . Counter-boring

C . Trepanning

D . Spot facing

Answer: Option A

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