BSMP 3 SHEET METAL JOINTS - Practice Mode

1) What is the formula to calculate the fold size of the seam in locked groove joint?

Fold size = width of the lock - 2 times the material thickness Fold size = width of the lock - 3 times the material thickness Fold size = width of the lock - 4 times the material thickness Fold size = width of the lock - 5 times the material thickness

Correct Answer: Fold size = width of the lock - 5 times the material thickness

2) Which type of joint, the work pieces to be joined are made in the form of a hook, inserted and locked using a groover?

Stake joint Standing seam Locked groove joint Pittsburgh lock

Correct Answer: Locked groove joint

3) How many types of dovetail seam are there?

Two Three Four Five

Correct Answer: Three

4) What is hemming allowance with respect to sheet thickness?

2 to 3 times 3 to 4 times 4 to 5 times 5 to 6 times

Correct Answer: 3 to 4 times

5) What type of operation done on sheet metal to avoid sharp edge?

Wiring Turning Hemming Stiffening

Correct Answer: Hemming

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