Discussion
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- Question
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
- Correct Answer
- all of these
- 1. The plunge grinding requires very __________ speed.
Options- A. high
- B. low Discuss
- 2. 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
- 3. Crater wear leads to
Options- A. increase in cutting temperature
- B. weakening of tool
- C. friction and cutting forces
- D. all of these Discuss
- 4. 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
- 5. 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
- 6. The lip clearance angle should decrease towards the centre of the drill than at the circumference.
Options- A. Yes
- B. No Discuss
- 7. 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
- 8. Which of the following parameters govern the value of shear angle in continuous chip formation?
Options- A. True feed
- B. Chip thickness
- C. Rake angle of the cutting tool
- D. all of these Discuss
- 9. For turning internal tapers, the suitable method is
Options- A. by a form tool
- B. by setting over the tail stock
- C. by a taper turning attachment
- D. by swivelling the compound rest Discuss
- 10. In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be
Options- A. doubled
- B. halved
- C. quadrupled
- D. unchanged Discuss
Production Engineering problems
Search Results
Correct Answer: low
Correct Answer: taken between two successive wheel dressings
Correct Answer: all of these
Correct Answer: gang milling
Correct Answer: helix angle
Correct Answer: No
Correct Answer: all of the above
Correct Answer: all of these
Correct Answer: by a taper turning attachment
Correct Answer: doubled
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