Lathe Operations MCQ with Answers

1) Which one of the following is the correct position of threading tool to cut V-thread ?

Answer is:

Exactly at centre height of the workpiece with tool axis perpendicular to the workpiece axis

Explanation:

Exactly at centre height of the workpiece with tool axis perpendicular to the workpiece axis is the correct position of threading tool to cut V-thread.

Which one of the following is the correct position of threading tool to cut V-thread ?

2) Which one of the following statements is suitable to get better finish by turning ?

Answer is:

Increase the speed and reduce the feed

Explanation:

Better finish by turning can be obtained by increasing the speed and reducing the feed.

3) For plain turning a 60 mm diameter workpiece using HSS tool with recommend cutting speed of 30 metre / min., the rpm should be

Answer is:

159 rpm

4) Which of the following factors governs the selection of feed when turning a workpiece ?

Answer is:

All of the above

5) Which one of the following shoulders is used on components to be threaded ?

Answer is:

Undercut shoulder

Explanation:

Undercut shoulder is used on components to be threaded.