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Mechanical Engineering :: Machine Design

  1. The elasticity is the property of a material which enables it to

  2. A.

    regain its original shape after deformation when the external forces are removed

    B.

    draw into wires by the application of a tensile force

    C.

    resist fracture due to high impact loads

    D.

    retain deformation produced under load permanently

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  3. The surface finish factor for a mirror polished material is

  4. A.

    0.45

    B.

    0.65

    C.

    0.85

    D.

    1

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  5. For low and moderate speed engines, the cam follower should move with

  6. A.

    uniform velocity

    B.

    simple harmonic motion

    C.

    uniform accleration and retardation

    D.

    cycloidal motion

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  7. Which of the following statement is correct ?

  8. A.

    A parallel sunk key is a taperless key

    B.

    A parallel sunk key may be rectangular or square in cross-section

    C.

    A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft

    D.

    all of the above

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  9. When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

  10. A.

    0.5 d

    B.

    0.75 d

    C.

    d

    D.

    1.25 d

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