Discussion
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- Question
Buffing wheels are made of
Options- A. softer metals
- B. cotton fabric
- C. carbon
- D. graphite
- Correct Answer
- cotton fabric
- 1. In determining the various forces on the chip, Merchant assumed that the
Options- A. cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
- B. only continuous chip without built-up-edge is produced
- C. cutting velocity remains constant
- D. all of the above Discuss
- 2. The usual value of the point angle of a drill is
Options- A. 70°
- B. 100°
- C. 118°
- D. 130° Discuss
- 3. In order to obtain a surface finish in the range of 0.75 ?m to 1.25 ?m , the operation used is called.
Options- A. grinding
- B. lapping
- C. honing
- D. buffing Discuss
- 4. Half nut is used to lock the lathe carriage to the lead screw for thread cutting.
Options- A. True
- B. False Discuss
- 5. The broaching operation in which the work moves past the stationary tool is called
Options- A. pull broaching
- B. push broaching
- C. surface broaching
- D. continuous broaching Discuss
- 6. Which of the following statement is correct as regard to up milling?
Options- A. It can not be used on old machines due to backlash between the feed screw of the table and the nut.
- B. The chips are disposed off easily and do not interfere with the cutting.
- C. The surface milled appears to be slightly wavy.
- D. The coolant can be poured directly at the cutting zone where the cutting force is maximum. Discuss
- 7. The angle between the face of the tool and a line tangent to the machined surface at the cutting point is called cutting angle.
Options- A. Correct
- B. Incorrect Discuss
- 8. Holes are machined by push broaches only for sizing.
Options- A. Correct
- B. Incorrect Discuss
- 9. In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called
Options- A. friction zone
- B. work-tool contact zone
- C. shear zone
- D. none of these Discuss
- 10. The operation performed on a shaper is
Options- A. machining horizontal surface
- B. machining vertical surface
- C. machining angular surface
- D. all of these Discuss
Production Engineering problems
Search Results
Correct Answer: all of the above
Correct Answer: 118°
Correct Answer: grinding
Correct Answer: True
Correct Answer: continuous broaching
Correct Answer: The surface milled appears to be slightly wavy.
Correct Answer: Correct
Correct Answer: Correct
Correct Answer: friction zone
Correct Answer: all of these
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