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  • Question

  • Tool life is generally better when


  • Options
  • A. grain size of the metal is large
  • B. grain size of the metal is small
  • C. hard constituents are present in the microstructure of the tool material
  • D. none of the above

  • Correct Answer
  • grain size of the metal is large 

    • Production Engineering problems

    Search Results

    • 1. The cutting fluid mostly used for machining alloy steels is

    • Options
    • A. water
    • B. soluble oil
    • C. dry
    • D. sulphurised mineral oil
      • Discuss
    • 2. A broach has

    • Options
    • A. roughing teeth
    • B. semi-finishing teeth
    • C. finishing teeth
    • D. all of these
      • Discuss
    • 3. The cutting force in down milling is maximum when the tooth begins its cut and reduces to minimum when the tooth leaves the work.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 4. Cutting fluids are used to

    • Options
    • A. cool the tool
    • B. improve surface finish
    • C. cool the workpiece
    • D. all of these
      • Discuss
    • 5. Tool signature consists of __________ elements.

    • Options
    • A. two
    • B. four
    • C. five
    • D. seven
      • Discuss
    • 6. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is

    • Options
    • A. 5 m/min
    • B. 10 m/min
    • C. 15 m/min
    • D. 30 m/min
      • Discuss
    • 7. Which of the following operation is first performed?

    • Options
    • A. Spot facing
    • B. Boring
    • C. Tapping
    • D. Drilling
      • Discuss
    • 8. In which of the following machine, the work rotates and the tool is stationary?

    • Options
    • A. Vertical boring machine
    • B. Horizontal boring machine
    • C. Precision boring machine
    • D. Jig boring machine
      • Discuss
    • 9. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called

    • Options
    • A. truing
    • B. dressing
    • C. facing
    • D. clearing
      • Discuss
    • 10. In a plain milling cutter, the portion of the gash adjacent to the cutting edge on which the chip impinges is called

    • Options
    • A. face
    • B. fillet
    • C. land
    • D. lead
      • Discuss

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