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  • Question

  • A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through-hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is


  • Options
  • A. 0.2 mm
  • B. 10 mm
  • C. 20 mm
  • D. 100 mm

  • Correct Answer
  • 20 mm 

    • Production Engineering problems

    Search Results

    • 1. The average cutting speed for turning mild steel with a high speed steel tool is

    • Options
    • A. 15 to 19 m/min
    • B. 25 to 31 m/min
    • C. 60 to 90 m/min
    • D. 90 to 120 m/min
      • Discuss
    • 2. In centreless grinders, the regulating wheel is inclined at

    • Options
    • A. 0° to 8°
    • B. 9° to 15°
    • C. 16° to 20°
    • D. 21° to 25°
      • Discuss
    • 3. In __________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to the maximum when the cut terminates.

    • Options
    • A. conventional milling
    • B. climb milling
    • C. face milling
    • D. end milling
      • Discuss
    • 4. The tail stock and the carriage of a lathe may be guided on same or different guideway.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Spot facing is an operation of smoothing and squaring the surface around a hole.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The taper on the lathe spindle is

    • Options
    • A. 1 in 10
    • B. 1 in 15
    • C. 1 in 20
    • D. 1 in 30
      • Discuss
    • 7. The tool life is __________ cutting speed.

    • Options
    • A. independent of
    • B. dependant upon
      • Discuss
    • 8. The aluminium oxide abrasive is chiefly used for grinding

    • Options
    • A. high speed steel
    • B. carbon steel
    • C. wrought iron
    • D. all of these
      • Discuss
    • 9. In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called

    • Options
    • A. friction zone
    • B. work-tool contact zone
    • C. shear zone
    • D. none of these
      • Discuss
    • 10. In a shaper

    • Options
    • A. tool is stationary and work reciprocates
    • B. work is stationary and tool reciprocates
    • C. tool moves over stationary work
    • D. tool moves over reciprocating work
      • Discuss

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