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- Question
The cutting speed for drilling copper with high speed steel drills varies from
Options- A. 10 to 20 m/min
- B. 18 to 30 m/min
- C. 24 to 45 m/min
- D. 60 to 90 m/min
- Correct Answer
- 18 to 30 m/min
- 1. In down milling, the thickness of chip is
Options- A. minimum at the beginning of the cut and maximum at the end of the cut
- B. maximum at the beginning of the cut and minimum at the end of the cut
- C. uniform throughout the cut
- D. none of these Discuss
- 2. The main purpose of a boring operation, as compared to drilling, is to
Options- A. drill a hole
- B. finish the drilled hole
- C. correct the hole
- D. enlarge the existing hole Discuss
- 3. The chisel edge angle of a drill is usually 120° to 135°.
Options- A. Correct
- B. Incorrect Discuss
- 4. The continuous chips are in the form of long coils having the same thickness throughout.
Options- A. Agree
- B. Disagree Discuss
- 5. The material which on machining produces chips with built up edge is
Options- A. brittle material
- B. tough material
- C. hard material
- D. ductile material Discuss
- 6. Climb milling is chosen while machining because
Options- A. the chip thickness increase gradually
- B. it enables the cutter to dig in and start the cut
- C. the specific power consumption is reduced
- D. better surface finish can be obtained Discuss
- 7. The high cutting speed and large rake angle of the tool will result in the formation of
Options- A. continuous chips
- B. discontinuous chip
- C. continuous chips with built up edge
- D. none of these Discuss
- 8. Gear burnishing is a process for
Options- A. surface finishing
- B. under-cut gears
- C. cycloidal gears
- D. removing residual stresses from teeth roots Discuss
- 9. In continuous chip cutting, the maximum heat __________ the velocity of cutting.
Options- A. depends upon
- B. does not depend upon Discuss
- 10. The grinding operaion is a
Options- A. shaping operation
- B. forming operation
- C. surface finishing operation
- D. dressing operation Discuss
Production Engineering problems
Search Results
Correct Answer: maximum at the beginning of the cut and minimum at the end of the cut
Correct Answer: enlarge the existing hole
Correct Answer: Correct
Correct Answer: Agree
Correct Answer: ductile material
Correct Answer: it enables the cutter to dig in and start the cut
Correct Answer: continuous chips
Correct Answer: surface finishing
Correct Answer: depends upon
Correct Answer: surface finishing operation
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