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

Exactly at centre height of the workpiece with tool axis at 60 Degree to the workpiece axis

Exactly at centre height of the workpiece with tool axis at 45 Degree to the workpiece axis

Exactly at centre height of the workpiece with tool axis at 30 Degree to the workpiece axis

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