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Engineering materials & metallurgy andManufacturing Technology II

1. Guest theory is used for

1. Brittle materials 2.ductile materials 3. Elastic materials

4. Plastic materials

2. Babbit metal is a

1. Lead base alloy 2.copper base alloy 3. Tin base alloy

4. Cadmium base alloy

3. A molecule consisting of one atom is known as

1. Monatomic 2.diatomic 3. Triatomic 4.polyatomic

4. The process extensively used for making bolts and nuts is

1. Hot pressing 2.cold heading 3. Cold peening 4. Extrusion

5. The material which can be best cut with oxygen cutting process is

1. Mild steel 2. Brass 3. Copper 4. Aluminum

6. Shock resisting steels should have

1. Low wear resistance 2. Low hardness 3. Low tensile strength 4.

Toughness

7. For the pipe fitting like elbow, tee, union etc., which of the following is

preferred?

1. Pig iron 2. Malleable case iron 3. Spheroidal graphite case iron 4. High

carbon steel

8. Malleable cast iron is produced

1. by adding magnesium to molten 2. By quick cooling of molten case iron

3. From white cast i ron by annealing process 4. None of these

9. The cupola is used to manufacture

1. Cast iron 2. Mild steel 3. High speed steel 4. Cast tool steel

10. The atomic mass of sulphur is

1).12 2). 14 3). 16 4) 4 .32

11. The surface finish factor for a mirror polished material is

1).0.45 2). 0.65 3). 0.85 4).1

12. The flux commonly used in brazing is

1. Zinc chloride 2. Ammonium chloride 3. Rosin plus alcohol 4. Borax

13. The cold chisels are made by

1. Cast iron 2. Mild steel 3. High speed steel 4. Cast tool steel

14. Discontinues chips are formed during machining of

1. Brittle materials 2. Ductile metals 3. Hard materials 4.soft materials

15. Ceramics tools are fixed to tool body by

1. Soldering 2. Brazing 3. Welding 4.clamping

16. Tool signature consists of ---------- elements

1. Two 2. Six 3. Seven 4.eight

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