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- Question
When the end of a tap is tapered for about three or four threads, it is known as a
Options- A. taper tap
- B. bottoming tap
- C. second tap
- D. none of these
- Correct Answer
- second tap
- 1. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon
Options- A. work material
- B. tool material
- C. working conditions
- D. type of chip produced Discuss
- 2. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
Options- A. independent of index change gear ratio
- B. dependent on speed change gear ratio
- C. inter-related to index change gear ratio
- D. independent of speed and index change gear ratio Discuss
- 3. In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
Options- A. high metal removal rate
- B. dry machining
- C. use of soft cutting tool
- D. surface finish Discuss
- 4. Which of the following statement is correct regarding grinding of high carbon steel?
Options- A. Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.
- B. Aluminium oxide wheels are employed.
- C. The grinding wheel has to be of open structure.
- D. all of the above Discuss
- 5. In centreless grinding, the surface speed of regulating wheel is
Options- A. 5 to 15 m/min
- B. 15 to 60 m/min
- C. 60 to 90 m/min
- D. 90 to 120 m/min Discuss
- 6. The example of snag grinding is
Options- A. trimming the surface left by sprues and risers on castings
- B. grinding the parting line left on castings
- C. removing flash on forgings
- D. all of these Discuss
- 7. Which of the following statement is correct for orthogonal cutting system?
Options- A. The cutting edge of the tool is perpendicular to the direction of tool travel.
- B. The cutting edge clears the width of the workpiece on either ends.
- C. The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
- D. all of the above Discuss
- 8. The type of tool used on lathe, shaper and planer is
Options- A. single point cutting tool
- B. two point cutting tool
- C. three point cutting tool
- D. multi-point cutting tool Discuss
- 9. The hardness of a grinding wheel is specified by
Options- A. Brinell hardness number
- B. Rockwel! hardness number
- C. Vickers pyramid number
- D. letter of alphabet Discuss
- 10. In a shaper, the length of stroke is increased by
Options- A. increasing the centre distance of bull gear and crank pin
- B. decreasing the centre distance of bull gear and crank pin
- C. increasing the length of the arm
- D. decreasing the length of the slot in the slotted lever Discuss
Production Engineering problems
Search Results
Correct Answer: tool material
Correct Answer: inter-related to index change gear ratio
Correct Answer: surface finish
Correct Answer: all of the above
Correct Answer: 15 to 60 m/min
Correct Answer: all of these
Correct Answer: all of the above
Correct Answer: single point cutting tool
Correct Answer: letter of alphabet
Correct Answer: increasing the centre distance of bull gear and crank pin
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