Discussion
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- Question
The usual value of the helix angle of a drill is
Options- A. 20°
- B. 30°
- C. 45°
- D. 60°
- Correct Answer
- 30°
- 1. 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
- 2. If the grain size is __________ the tool life is better.
Options- A. smaller
- B. larger Discuss
- 3. 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
- 4. The process of improving the cutting action of the grinding wheel is called
Options- A. truing
- B. dressing
- C. facing
- D. clearing Discuss
- 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
- 6. Glazing in grinding wheels __________ cutting capacity.
Options- A. has no effect on
- B. increase
- C. decrease Discuss
- 7. The angle between the face and flank of the single point cutting tool is known as
Options- A. rake angle
- B. clearance angle
- C. lip angle
- D. point angle Discuss
- 8. When the shear angle is small
Options- A. path of shear is short and chip is thin
- B. path of shear is large and chip is thick
- C. path of shear is short and chip is thick
- D. path of shear is large and chip is thin Discuss
- 9. The advantage of a broaching operation is that
Options- A. rate of production is very high
- B. high accuracy and high class of surface finish is possible
- C. roughing and finishing cuts are completed in one pass of the tool
- D. all of the above Discuss
- 10. In drilling mild steel and brass, the point angle of a drill is 118°.
Options- A. True
- B. False Discuss
Production Engineering problems
Search Results
Correct Answer: four direct and four indirect speeds
Correct Answer: larger
Correct Answer: all of these
Correct Answer: dressing
Correct Answer: the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
Correct Answer: decrease
Correct Answer: lip angle
Correct Answer: path of shear is large and chip is thick
Correct Answer: all of the above
Correct Answer: True
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