Production Engineering problems
- 1. Broaching is applied for machining
Options- A. internal and external surfaces
- B. round or irregular shaped holes
- C. external flat and contoured surfaces
- D. all of these Discuss
Correct Answer: all of these
- 2. In electro-discharge machining, the tool is connected to cathode.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 3. In machining cast iron, no cutting fluid is required.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 4. In electro-chemical machining, the gap between the tool and work is kept as
Options- A. 0.1 mm
- B. 0.25 mm
- C. 0.4 mm
- D. 0.75 mm Discuss
Correct Answer: 0.75 mm
- 5. In transverse grinding
Options- A. the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
- B. the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
- C. the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
- D. the work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face Discuss
Correct Answer: the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
- 6. The process of improving the cutting action of the grinding wheel is called
Options- A. truing
- B. dressing
- C. facing
- D. clearing Discuss
Correct Answer: dressing
- 7. In machining metals, surface roughness is due to
Options- A. feed marks or ridges left by the cutting tool
- B. fragment of built-up edge on the machined surface
- C. cutting tool vibrations
- D. all of these Discuss
Correct Answer: all of these
- 8. If the grain size is __________ the tool life is better.
Options- A. smaller
- B. larger Discuss
Correct Answer: larger
- 9. A lathe with four steps on the cone pulley and with backgears will have
Options- A. four direct speeds
- B. four indirect speeds
- C. four direct and four indirect speeds
- D. eight indirect speeds Discuss
Correct Answer: four direct and four indirect speeds
- 10. The usual value of the helix angle of a drill is
Options- A. 20°
- B. 30°
- C. 45°
- D. 60° Discuss
Correct Answer: 30°
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