LATHE (16/06/2025)

The process of removing material from the periphery of a rotating workpiece is called:

• Facing
• Turning
• Boring
• Knurling

Answer explanation

Turning produces a cylindrical surface by moving the tool parallel to the axis.

Which lathe operation is performed to create steps of different diameters?

• Plane turning
• Knurling
• Step turning
• Chamfering

Answer explanation

Step turning creates stepped profiles with different diameters.

Which operation is performed to enlarge a previously drilled hole?

• Drilling
• Reaming
• Boring
• Facing

Answer explanation

Boring enlarges and trues an existing drilled hole.

Which of the following is NOT a method for taper turning?

• Form tool method
• Tailstock offset method
• Boring method
• Compound rest method

Answer explanation

Boring is not used for taper turning; it enlarges holes.

Reaming is used for:

• Making external threads
• Enlarging holes significantly
• Rough cutting
• Finishing a drilled hole

Answer explanation

Reaming is a finishing operation to improve hole accuracy.

Which lathe operation is used for cutting off a part of a workpiece?

• Chamfering
• Parting off
• Facing
• Thread cutting

Answer explanation

Parting off separates a part of the rotating job.

Chamfering is done to:

• Provide threads
• Improve grip
• Bevel the sharp edge
• Bore a hole

Answer explanation

Chamfering gives a bevel to edges to remove sharpness.

Which of the following operations is typically the first operation done on a lathe?

• Drilling
• Facing
• Boring
• Tapering

Answer explanation

Facing is the first operation to prepare a flat surface.

Which operation uses a patterned tool to imprint texture on the surface of a cylindrical job?

• Facing
• Knurling
• Reaming
• Parting off

Answer explanation

Knurling adds texture for grip or decorative finish.

Which lathe operation is used for cutting off a part of a workpiece?

• Chamfering
• Parting off
• Facing
• Thread cutting

Answer explanation

Parting off separates a part of the rotating job.