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  • Question
  • The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle.


  • Options
  • A. Correct
  • B. Incorrect

  • Correct Answer
  • Incorrect 


  • Production Engineering problems


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    • 1. A single point thread cutting tool should ideally have

    • Options
    • A. zero rake angle
    • B. positive rake angle
    • C. negative rake angle
    • D. point angle
    • Discuss
    • 2. The different spindle speeds on a lathe form

    • Options
    • A. arithmetical progression
    • B. geometrical progression
    • C. harmonical progression
    • D. any one of these
    • Discuss
    • 3. When the cutting edge of the tool is dull, then during machining

    • Options
    • A. continuous chips are formed
    • B. discontinuous chips are formed
    • C. continuous chips with built-up edge are formed
    • D. no chips are formed
    • Discuss
    • 4. Which of the following statement is wrong about ultra-sonic machining?

    • Options
    • A. It is best suited for machining hard and brittle materials.
    • B. It cuts materials at very slow speeds.
    • C. It removes large amount of material.
    • D. It produces good surface finish.
    • Discuss
    • 5. The rake angle required to machine brass by high speed steel tool is

    • Options
    • A. 0°
    • B. 10°
    • C. 20°
    • D. -10°
    • Discuss
    • 6. The method of grinding used to produce a straight or tapered surface on a workpiece, is

    • Options
    • A. internal cylindrical grinding
    • B. form grinding
    • C. external cylindrical grinding
    • D. surface grinding
    • Discuss
    • 7. Side rake angle on tools is provided to control chip flow.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. If the helix angle of the drill is made __________ 30°, then the torque required to drive the drill at a given feed will be more.

    • Options
    • A. equal to
    • B. less than
    • C. more than
    • Discuss
    • 9. A left hand tool on a lathe cuts most efficiently when it travels

    • Options
    • A. from left to right end of the lathe bed
    • B. from right to left end of the lathe bed
    • C. with the help of a compound slide
    • D. across the bed
    • Discuss
    • 10. Larger end cutting edge angle __________ tool life.

    • Options
    • A. increases
    • B. decreases
    • C. does not effect
    • Discuss


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