Home / Mechanical Engineering / Machine Design :: Section 8

Mechanical Engineering :: Machine Design

  1. The working of metals above the recrystallisation temperature is known as hot working.

  2. A.

    True

    B.

    False


  3. In a band and block brake, the ratio of tensions on the tight and slack sides of band is given by (where μ = Coefficient of friction between the blocks and the drum, θ = Semi-angle of each block subtending at the centre of drum, and n = Number of blocks)

  4. A.

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

    B.

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

    C.

    \(\frac { T_1 } { T_2 } = (\frac {1 - \mu tan \theta}{ 1 + \mu tan \theta})^n\)

    D.

    \(\frac { T_1 } { T_2 } = (\frac {1 + \mu tan \theta}{ 1 - \mu tan \theta})^n\)


  5. The ratio of number of teeth to the pitch circle diameter in millimetres is called circular pitch.

  6. A.

    Agree

    B.

    Disagree


  7. The washer is generally specified by its

  8. A.

    outer diameter

    B.

    hole diameter

    C.

    thickness

    D.

    mean diameter


  9. The taper on key is given on

  10. A.

    bottom side only

    B.

    top side only

    C.

    on both sides

    D.

    any side