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Mechanical Engineering :: Machine Design

  1. The rolling contact bearings are known as

  2. A.

    thick lubricated bearings

    B.

    plastic bearings

    C.

    thin lubricated bearings

    D.

    antifriction bearings


  3. The backlash for spur gears depends upon

  4. A.

    module

    B.

    pitch line velocity

    C.

    tooth profile

    D.

    both (a) and (b)


  5. The size of a gear is usually specified by

  6. A.

    pressure angle

    B.

    pitch circle diameter

    C.

    circular pitch

    D.

    diametral pitch


  7. The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be

  8. A.

    εc + 2εl

    B.

    c + εl

    C.

    εc + εl2

    D.

    εc2 + εl


  9. The bearings of heavy series have capacity __________ over the medium series.

  10. A.

    10 to 20%

    B.

    20 to 30%

    C.

    30 to 40%

    D.

    40 to 50%