Discussion
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- Question
A mandrel is used to hold
Options- A. an eccentric work
- B. a heavy work
- C. a thin work
- D. none of these
- Correct Answer
- none of these
- 1. Which of the following process is used for preparing parts having large curved surfaces and thin sections?
Options- A. Hot machining
- B. Ultra-sonic machining
- C. ECM process
- D. Chemical milling Discuss
- 2. The cutting speed of a drill depends upon the
Options- A. material of drill
- B. type of material to be drilled
- C. quality of surface finish desired
- D. all of these Discuss
- 3. A dynamometer is a device used for the measurement of
Options- A. chip thickness ratio
- B. forces during metal cutting
- C. wear of the cutting tool
- D. deflection of the cutting tool Discuss
- 4. A grinding wheel is said to be of __________ if it holds the abrasive grains more securely.
Options- A. soft grade
- B. medium grade
- C. hard grade Discuss
- 5. Glazing in grinding wheels takes place when the
Options- A. wheel is too hard or wheel revolves at a very high speed
- B. wheel is too soft or wheel revolves at a very slow speed
- C. wheel is too hard and wheel revolves at very slow speed
- D. wheel is too soft and wheel revolves at a very high speed Discuss
- 6. In drilling operation, the metal is removed by
Options- A. shearing
- B. extrusion
- C. shearing and extrusion
- D. shearing and compression Discuss
- 7. A 15 mm drilling machine means that it can drill a hole
Options- A. ofmaximumdiameter 15 mm
- B. in 15 mm thick plates
- C. having cross-sectional area of 15 mm2
- D. none of these Discuss
- 8. Ultra-sonic machining is best suited for
Options- A. tool steels
- B. sintered carbides
- C. glass
- D. all of these Discuss
- 9. 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
- 10. 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
Production Engineering problems
Search Results
Correct Answer: Chemical milling
Correct Answer: all of these
Correct Answer: forces during metal cutting
Correct Answer: hard grade
Correct Answer: wheel is too hard or wheel revolves at a very high speed
Correct Answer: shearing and extrusion
Correct Answer: ofmaximumdiameter 15 mm
Correct Answer: all of these
Correct Answer: break the chips into short segments
Correct Answer: wear of abrasive grains
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