Discussion
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- Question
The chamfering is an essential operation after
Options- A. knurling
- B. rough turning
- C. boring
- D. thread cutting
- Correct Answer
- thread cutting
- 1. The tool material, for faster machining, should have
Options- A. wear resistance
- B. red hardness
- C. toughness
- D. all of these Discuss
- 2. When the grinding wheel is marked by the letters from I to P, it indicates that the grinding wheel is of hard grade.
Options- A. True
- B. False Discuss
- 3. In which of the following machine, the work remains stationary and the tool is rotated?
Options- A. Vertical boring machine
- B. Horizontal boring machine
- C. Precision boring machine
- D. Jig boring machine Discuss
- 4. A grinding wheel becomes glazed (i.e. cutting edge takes a glass-like appearance) due to
Options- A. wear of bond
- B. breaking of abrasive grains
- C. wear of abrasive grains
- D. cracks on grinding wheel Discuss
- 5. Chip breakers are used to
Options- A. increase tool life
- B. remove chips from bed
- C. break the chips into short segments
- D. to minimise heat generation Discuss
- 6. An open structure of a grinding wheel is used for
Options- A. soft materials
- B. tough materials
- C. ductile materials
- D. all of these Discuss
- 7. The tap used to cut threads in a blind hole is
Options- A. taper tap
- B. second tap
- C. bottoming tap
- D. any one of these Discuss
- 8. Low helix angle drills are preferred for drilling holes in
Options- A. plastics
- B. copper
- C. cast steel
- D. carbon steel Discuss
- 9. A twist drill is specified by its
Options- A. shank, material and diameter
- B. shank, lip angle and size of flute
- C. material, length of body and helix angle
- D. any one of these Discuss
- 10. The grade of grinding wheel depends upon
Options- A. hardness of the material being ground
- B. speed of wheel and work
- C. condition of grinding machine
- D. all of these Discuss
Production Engineering problems
Search Results
Correct Answer: all of these
Correct Answer: False
Correct Answer: Horizontal boring machine
Correct Answer: wear of abrasive grains
Correct Answer: break the chips into short segments
Correct Answer: all of these
Correct Answer: bottoming tap
Correct Answer: plastics
Correct Answer: shank, material and diameter
Correct Answer: all of these
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