FY->Module-6 : THREAD CUTTING - Quiz

1) Which type of thread is used in screw jack spindle?

BSW thread BSF thread Square thread Worm thread

2) A thread is represented as M12 x 1.5. What does represent the letter 12?

Major diameter Minor diameter Pitch Root diameter

3) Which method of holding is used for lengthy work to avoid over hanging?

In between centres In four jaw chuck In face plate Angle plate

4) Calculate the change gear required to cut 4mm pitch thread in a lathe having lead screw of 4mm (lathe stud gear (driver has 50 teeth)

25 50 100 150

5) Calculate the change gear (driver gear) if driven gear has 120 teeth to cut 3mm pitch on a job using lathe having 6 mm pitch lead screw?

50 60 100 150