Question

Q.3-Choose the correct answer of the following: 1. Injection molding is a type of: (a) Vacuum casting (b) Centrifugal casting (c) Squeeze casting (d) Die casting

2. From various casting processes, investment casting process is the suitable operation for manufacturing of: (a) Engine blocks (b) Gears (c) Jewelry (d) Car wheels (e) Pipes

3. The welding process by (GMAW) process is (a) Slower than, (b) Faster than, (c) at same speed as (d) at unpredictable speed.

4. The clearance angle is provided on the tools with a view to (a) Strength the tool. (b) Shear off the metal. (c) Prevent the tool from rubbing on workpiece (d) Facilitate easy flow of chips.

5. Chances of crack propagation are more in: (a) Cold working process (b) Hot working process (c) Both of the above (d) None of the above

6. For machining of carbide material which of the following tool will be preferred? (a) Zero rake angle tools. (b) Large positive rake angle tools. c) Large negative rake angle tools (d) Small point angle tools.

7. The rpm (N) of the shaft, diameter (d) =25 mm, cutting speed (v) =50 m/min is. (a) 63.69 (b) 636.9 (c) 3.925 (d) 3925.

8. In which of the following forging process poor material utilization occurs? (a) Open die (b) Closed die forging (c) Impression dies forging (d) Swaging forging

9. In the (GTAW) process. the thickness of chip is maximum at the beginning of the cut and minimum at th end of the cut (a) Up milling (b) down milling (c) Face milling (d) None of the Mentioned

10. Which of the following is not used because of the problem of handling extruded metal coming out through moving ram? (a) Direct extrusion (b) Indirect extrusion (c) Impact extrusion (d) Hydrostatic extrusion.

Answer 1

Answer:

1-Injection moulding is a manufacturing process