Home / Mechanical Engineering / Machine Design :: Section 5

Mechanical Engineering :: Machine Design

  1. The property of a bearing material which has the ability to accomodate small particles of dust, grit etc. without scoring the material of the journal, is called

  2. A.

    bondability

    B.

    embeddability

    C.

    comformability

    D.

    fatigue strength


  3. The shock resistance of steel is increased by adding

  4. A.

    nickel

    B.

    chromium

    C.

    nickel and chromium

    D.

    cobalt and molybedenum


  5. The ratio of driving tensions for flat belts, neglecting centrifugal tension, is (where T1, and T2 = Tensions on the tight and slack sides of belt respectively, μ = Coefficient of friction, between the belt and pulley, and θ = Angle of contact)

  6. A.

    \(\frac { T_1 } { T_2 } = \mu \theta\)

    B.

    \(log \frac { T_1 } { T_2 } = \mu \theta\)

    C.

    \(\frac { T_1 } { T_2 } = e ^{\mu \theta}\)

    D.

    \(\frac { T_1 } { T_2 } = log \mu \theta\)


  7. A flange coupling is a type of rigid coupling.

  8. A.

    Correct

    B.

    Incorrect


  9. The strength of the un-riveted plate (P) per pitch length is equal to

  10. A.

    p.dt

    B.

    p.tt

    C.

    (p - dt

    D.

    (p - dt