1. The brass and bronze are welded by flame….

1. Neutral
2. Carburising
3. All of these
4. Oxidizing

2. gimlet is a_____tool.

1. Marking
2. Cutting
3. Boring
4. None of these

3. In TIG arc welding, the welding zone is shielded by an atmosphere of

1. Helium gas
2. Argon gas
3. None of these.
4. Either (A) or (B)

4. In sheet metal blanking, shear is provided on punches and dies so that

1. Press load is reduced
2. Good cut edge is obtained
3. Warping of sheet is minimized.
4. Warping of sheet is minimized

5. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately

1. 42 mm
2. 44 mm
3. 48 mm
4. 46 mm