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Mechanical Engineering :: Machine Design

  1. The velocity factor for carefully cut gears operating at velocities upto __________ is equal to 4.5/4.5 + v.

  2. A.

    10 m/s

    B.

    12.5 m/s

    C.

    15 m/s

    D.

    20 m/s


  3. A localised compressive stress at the area of contact between two members is known as

  4. A.

    tensile stress

    B.

    bending stress

    C.

    bearing stress

    D.

    shear stress


  5. The metal suitable for bearings subjected to heavy loads is

  6. A.

    silicon bronze

    B.

    white metal

    C.

    monel metal

    D.

    phosphor bronze


  7. The V-belts are particularly suitable for __________ drives.

  8. A.

    short

    B.

    long


  9. For hardening alloy steels and high speed steels, they are heated to

  10. A.

    500 to 600°C

    B.

    700 to 900°C

    C.

    1100 to 1300°C

    D.

    1300 to 1500°C