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- Question
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
- Correct Answer
- ofmaximumdiameter 15 mm
- 1. In drilling operation, the metal is removed by
Options- A. shearing
- B. extrusion
- C. shearing and extrusion
- D. shearing and compression Discuss
- 2. A mandrel is used to hold
Options- A. an eccentric work
- B. a heavy work
- C. a thin work
- D. none of these Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. Ultra-sonic machining is best suited for
Options- A. tool steels
- B. sintered carbides
- C. glass
- D. all of these Discuss
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Production Engineering problems
Search Results
Correct Answer: shearing and extrusion
Correct Answer: none of these
Correct Answer: Chemical milling
Correct Answer: all of these
Correct Answer: forces during metal cutting
Correct Answer: all of these
Correct Answer: break the chips into short segments
Correct Answer: wear of abrasive grains
Correct Answer: Horizontal boring machine
Correct Answer: False
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