Discussion
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- Question
Crater wear leads to
Options- A. increase in cutting temperature
- B. weakening of tool
- C. friction and cutting forces
- D. all of these
- Correct Answer
- all of these
- 1. The operation of machining several surfaces of a workpiece simultaneously is called
Options- A. profile milling
- B. gang milling
- C. saw milling
- D. helical milling Discuss
- 2. The rake angle of a single point cutting tool corresponds to __________ of a twist drill.
Options- A. lip clearance angle
- B. helix angle
- C. point angle
- D. chisel edge angle Discuss
- 3. The width of cutting edge of a parting-off tool varies from
Options- A. 3 to 12 mm
- B. 5 to 20 mm
- C. 8 to 30 mm
- D. 15 to 40 mm Discuss
- 4. Small nose radius
Options- A. increases tool life
- B. decreases tool life
- C. produces chipping and decreases tool life
- D. results in excessive stress concentration and greater heat generation Discuss
- 5. Soft materials can not be economically ground due to
Options- A. high temperature involved
- B. frequent wheel clogging
- C. rapid wheel wear
- D. low work piece stiffness Discuss
- 6. The tool life in case of a grinding wheel is the time
Options- A. between two successive regrinds of the wheel
- B. taken for the wheel to be balanced
- C. taken between two successive wheel dressings
- D. taken for a wear of 1 mm on its diameter Discuss
- 7. The plunge grinding requires very __________ speed.
Options- A. high
- B. low Discuss
- 8. The factor considered for evaluation of machinability is
Options- A. cutting forces and power consumption
- B. tool life
- C. type of chips and shear angle
- D. all of these Discuss
- 9. The lip clearance angle should decrease towards the centre of the drill than at the circumference.
Options- A. Yes
- B. No Discuss
- 10. Tool life is measured by the
Options- A. number of pieces machined between tool sharpenings
- B. time the tool is in contact with the job
- C. volume of material removed between tool sharpenings
- D. all of the above Discuss
Production Engineering problems
Search Results
Correct Answer: gang milling
Correct Answer: helix angle
Correct Answer: 3 to 12 mm
Correct Answer: results in excessive stress concentration and greater heat generation
Correct Answer: frequent wheel clogging
Correct Answer: taken between two successive wheel dressings
Correct Answer: low
Correct Answer: all of these
Correct Answer: No
Correct Answer: all of the above
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