17) Which one of the following is the reason for torn threads while thread cutting on lathe ?

Answer is:

Any of the above

Explanation:

Reason for torn threads while thread cutting on lathe can be due to
Blunt tool
Heavy depth of cut
Insufficient side clearance

Answer is:

Explanation:

For setting of tool for threading, it is aligned with the work by using centre gauge.

Answer is:

Explanation:

Different tool types are required for cutting external and internal threads.

Answer is:

Explanation:

While cutting internal threads on lathe with single point tool, the spindle speed should be less than that for the plain turning operation.

Inserted tool bits are more advantageous while cutting threads

Before cutting internal threads, the hole should be chamfered

When internal thread cutting is done in a blind hole, a recess should be provided

When cutting internal threads, the core diameter may be equal to the size of external threads

Answer is: