Discussion
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- Question
In the relation VTn = C, the value of n for high speed steel tools varies from 0.25 to 0.40.
Options- A. Agree
- B. Disagree
- Correct Answer
- Disagree
- 1. Tumbler gears in lathe are used to
Options- A. reduce the spindle speed
- B. cut gears
- C. give desired direction of movement to the lathe carriage
- D. drill a workpiece Discuss
- 2. Hard and tough materials like cast iron should be turned at
Options- A. slow speed
- B. high speed
- C. any speed
- D. certain specific speed Discuss
- 3. A fine grained grinding wheel is used to grind
Options- A. hard and brittle materials
- B. soft and ductile materials
- C. hard and ductile materials
- D. soft and brittle materials Discuss
- 4. The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.
Options- A. mild steel
- B. copper
- C. aluminium
- D. brass Discuss
- 5. A bottoming tap has
Options- A. its end tapered for about three or four threads
- B. its end tapered for about eight or ten threads
- C. full threads for the whole of its length
- D. none of the above Discuss
- 6. Negative rakes are used for
Options- A. carbide tools
- B. heavy loads
- C. harder materials
- D. all of these Discuss
- 7. In oblique cutting system, the cutting edge of the tool
Options- A. may clear the width of the workpiece
- B. may or may not clear the width of the workpiece
- C. may not clear the width of the workpiece
- D. should always clear the width of the workpiece Discuss
- 8. Flank wear is due to the abrasive action of hard mis-constituents including debris from built up edge as the work material rubs the work surface.
Options- A. Correct
- B. Incorrect Discuss
- 9. In gear hobbing
Options- A. only hob rotates
- B. only gear blank rotates
- C. both hob and gear blank rotates
- D. neither hob nor gear blank rotates Discuss
- 10. A numerical method of identification of tool is known as tool signature.
Options- A. Correct
- B. Incorrect Discuss
Production Engineering problems
Search Results
Correct Answer: give desired direction of movement to the lathe carriage
Correct Answer: slow speed
Correct Answer: hard and brittle materials
Correct Answer: mild steel
Correct Answer: full threads for the whole of its length
Correct Answer: all of these
Correct Answer: may not clear the width of the workpiece
Correct Answer: Correct
Correct Answer: both hob and gear blank rotates
Correct Answer: Correct
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