Discussion
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- Question
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
- Correct Answer
- left hand spiral fluted reamer
- 1. In a plain milling machine, the table can be moved
Options- A. longitudinally
- B. crosswise
- C. vertically
- D. all of these Discuss
- 2. In plunge grinding
Options- A. the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
- B. the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
- C. the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
- D. the work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face Discuss
- 3. The grade of grinding wheel depends upon
Options- A. hardness of the material being ground
- B. speed of wheel and work
- C. condition of grinding machine
- D. all of these Discuss
- 4. A twist drill is specified by its
Options- A. shank, material and diameter
- B. shank, lip angle and size of flute
- C. material, length of body and helix angle
- D. any one of these Discuss
- 5. Low helix angle drills are preferred for drilling holes in
Options- A. plastics
- B. copper
- C. cast steel
- D. carbon steel Discuss
- 6. 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
- 7. To grind brittle materials, a coarse grained grinding wheel is used.
Options- A. Agree
- B. Disagree Discuss
- 8. 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
- 9. 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 Discuss
- 10. Gears can be best produced on mass production by
Options- A. shaping
- B. casting
- C. forming
- D. hobbing Discuss
Production Engineering problems
Search Results
Correct Answer: all of these
Correct Answer: the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
Correct Answer: all of these
Correct Answer: shank, material and diameter
Correct Answer: plastics
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: Disagree
Correct Answer: ?d n sin ?
Correct Answer: sixteen times
Correct Answer: hobbing
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