Production Engineering problems
- 1. In centreless grinding, work place centre will be
Options- A. above the line joining the two wheel centres
- B. below the line joining the two wheel centres
- C. on the line joining the two wheel centres
- D. at the intersection of the line joining the wheel centres with the work place plane Discuss
Correct Answer: above the line joining the two wheel centres
- 2. The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called
Options- A. up milling
- B. down milling
- C. face milling
- D. end milling Discuss
Correct Answer: up milling
- 3. The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
Options- A. helix or rake angle
- B. point angle
- C. chisel edge angle
- D. lip clearance angle Discuss
Correct Answer: helix or rake angle
- 4. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
Options- A. 5°
- B. 6°
- C. 8°
- D. 10° Discuss
Correct Answer: 6°
- 5. The hard grade grinding wheels are denoted by the letters
Options- A. A to H
- B. I to P
- C. Q to Z
- D. A to P Discuss
Correct Answer: Q to Z
- 6. In twist fluted drills, chips do not move out automatically.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 7. The grinding of long, slender shafts or bars is usually done by
Options- A. infeed grinding
- B. through feed grinding
- C. endfeed grinding
- D. any one of these Discuss
Correct Answer: through feed grinding
- 8. The tool may fail due to
Options- A. cracking at the cutting edge due to thermal stresses
- B. chipping of the cutting edge
- C. plastic deformation of the cutting edge
- D. all of these Discuss
Correct Answer: all of these
- 9. If the shear angle is large and the chip-tool contact area is low, then the tool life will be more.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 10. As the cutting speed increases, the tool cutting forces
Options- A. remain constant
- B. increases
- C. decreases
- D. first increases and then decreases Discuss
Correct Answer: decreases
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