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- Question
In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become
Options- A. half
- B. two times
- C. eight times
- D. sixteen times
- Correct Answer
- sixteen times
- 1. The actual feed in centreless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and ? = Angle of inclination of wheel)
Options- A. ?d
- B. ?d n
- C. ?d n sin ?
- D. ?d n cos ? Discuss
- 2. To grind brittle materials, a coarse grained grinding wheel is used.
Options- A. Agree
- B. Disagree Discuss
- 3. Side relief angle of a single point tool is the angle
Options- A. by which the face of the tool is inclined towards back
- B. by which the face of the tool is inclined sideways
- C. between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
- D. between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base Discuss
- 4. The type of reamer used for reaming soft aluminium or copper, is
Options- A. straight fluted reamer
- B. left hand spiral fluted reamer
- C. right hand spiral fluted reamer
- D. any one of these Discuss
- 5. In a plain milling machine, the table can be moved
Options- A. longitudinally
- B. crosswise
- C. vertically
- D. all of these Discuss
- 6. Gears can be best produced on mass production by
Options- A. shaping
- B. casting
- C. forming
- D. hobbing Discuss
- 7. Gears can be cut on a shaper.
Options- A. Agree
- B. Disagree Discuss
- 8. Jigs are used
Options- A. for holding and guiding the tool in drilling, reaming or tapping operations
- B. for holding the work in milling, grinding, planing or turning operations
- C. to check the accuracy of workpiece
- D. none of the above Discuss
- 9. The hole to be drilled for tapping is __________ the outside diameter of the thread on the tap.
Options- A. equal to
- B. smaller than
- C. greater than Discuss
- 10. Dielectric is used in
Options- A. electro-chemical machining
- B. ultra-sonic machining
- C. electro-discharge machining
- D. laser machining Discuss
Production Engineering problems
Search Results
Correct Answer: ?d n sin ?
Correct Answer: Disagree
Correct Answer: between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
Correct Answer: left hand spiral fluted reamer
Correct Answer: all of these
Correct Answer: hobbing
Correct Answer: Agree
Correct Answer: for holding and guiding the tool in drilling, reaming or tapping operations
Correct Answer: smaller than
Correct Answer: electro-discharge machining
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