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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

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  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

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

  6. A.

    silicon bronze

    B.

    white metal

    C.

    monel metal

    D.

    phosphor bronze

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

  8. A.

    short

    B.

    long

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  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

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