SY->Module-5 : THREAD CUTTING - Practice Mode

1) What is the relationship between pitch and lead of a single start thread?

Lead is twice the pitch Lead is half the pitch Lead is equal to pitch Lead is 1/4 pitch

Correct Answer: Lead is equal to pitch

2) What is the depth of 0.5 inch BSW 13TPI single start thread?

0.025" 0.038" 0.049" 0.082"

Correct Answer: 0.049"

3) Calculate change gears to cut a three start thread having a pitch of 1.5 mm; the lead screw has a pitch of 6 mm.

Driver 45 teeth, Driven 60 teeth Driver 60 teeth, Driven 50 teeth Driver 30 teeth, Driven 70 teeth Driver 50 teeth, Driven 100 teeth

Correct Answer: Driver 45 teeth, Driven 60 teeth

4) Where multistart threads are used?

For easy alignment For quick transmission For easy engagement For general fastening

Correct Answer: For quick transmission

5) Calculate pitch diameter of f 24 x 3 mm square thread?

21 mm 21.5 mm 22.5 mm 24 mm

Correct Answer: 22.5 mm

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