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Mechanical Engineering :: Manufacturing and Production Technology

  1. The shear velocity is the velocity of

  2. A.

     Tool relative to the workpiece

    B.

     Chip relative to the tool

    C.

     Tool along the tool face

    D.

     None of these


  3. A ring gauge is used to measure

  4. A.

     Outside diameter but not roundness

    B.

     Roundness but not outside diameter

    C.

     Both outside diameter and roundness

    D.

     Only external threads


  5. The grinding of long, slender shafts or bars is usually done by

  6. A.

     In-feed grinding

    B.

     Through feed grinding

    C.

     End-feed grinding

    D.

     Any one of these


  7. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of current change when the weld road is varied rapidly?

  8. A.

     Reactor

    B.

     Kerf

    C.

     Inductor

    D.

     Cone


  9. Thread grinding requires work speed from

  10. A.

     1 to 3 m/min

    B.

     5 to 10 m/min

    C.

     10 to 14 m/min

    D.

     14 to 20 m/min


  11. Small nose radius

  12. A.

     Increases tool life

    B.

     Decreases tool life

    C.

     Produces chipping and decreases tool life

    D.

     Results in excessive stress concentration and greater heat generation


  13. The cutting speed is maximum while machining _________ with a high speed steel tool.

  14. A.

     Cast iron

    B.

     Mild steel

    C.

     Brass

    D.

     Aluminium


  15. The cutting speed is minimum while machining _________ with a high speed steel tool.

  16. A.

     Cast iron

    B.

     Mild steel

    C.

     Brass

    D.

     Aluminium


  17. Which among the NC operations given below are continuous path operations?
    Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)

  18. A.

     AW, LC and M

    B.

     AW, D, LC and M

    C.

     D, LC, P and SW

    D.

     D, LC, and SW


  19. The material property which depends only on the basic crystal structure is

  20. A.

     Fatigue strength

    B.

     Work hardening

    C.

     Fracture strength

    D.

     Elastic constant