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Mechanical Engineering :: Machine Design

  1. In a butt welded joint, the size of weld is __________ the throat of weld.

  2. A.

    0.5 times

    B.

    equal to

    C.

    \(\sqrt{2 }times\)

    D.

    double


  3. Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

  4. A.

    Woodruff key

    B.

    Feather key

    C.

    Gib-head key

    D.

    Tangent key


  5. Which of the following cotter joint will be used to connect strap end of a connecting rod ?

  6. A.

    Spigot and socket cotter joint

    B.

    Sleeve and cotter joint

    C.

    Gib and cotter joint

    D.

    any one of these


  7. When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

  8. A.

    axially upwards

    B.

    axially downwards

    C.

    axially upwards or downwards

    D.

    none of these


  9. Which of the following bearing is preferred for oscillating conditions?

  10. A.

    Double row roller bearing

    B.

    Taper roller bearing

    C.

    Angular contact single row ball bearing

    D.

    Needle roller bearing