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Mechanical Engineering :: Workshop Technology

  1. A process used for making thin phosphate coating on steel is called parkerising.

  2. A.
    Correct
    B.
    Incorrect

  3. The recrystallisation temperature of steel is

  4. A.
    400° C
    B.
    600° C
    C.
    800° C
    D.
    none of these

  5. A basic hole is one whose

  6. A.
    lower deviation is zero
    B.
    upper deviation is zero
    C.
    lower and upper deviations are zero
    D.
    none of these

  7. Seam welding is best adopted for metal thickness ranging from

  8. A.
    0.025 to 3 mm
    B.
    3 to 5 mm
    C.
    5 to 8 mm
    D.
    8 to 10 mm

  9. A file with 50 - 60 teeth in 25 mm is called bastard file.

  10. A.
    True
    B.
    False

  11. The surface to be machined is marked on the pattern by

  12. A.
    red colour
    B.
    yellow colour
    C.
    black colour
    D.
    blue colour

  13. In electric resistance welding, pressure applied varies from

  14. A.
    1 to 5 MPa
    B.
    5 to 10 MPa
    C.
    10 to 25 MPa
    D.
    25 to 55 MPa

  15. In order to deliver molten metal from pouring basin to gate, a __________ is used.

  16. A.
    riser
    B.
    sprue
    C.
    core

  17. V-block is used to

  18. A.
    check the trueness of flat surfaces
    B.
    locate centres of round rods
    C.
    check the surface roughness
    D.
    none of these

  19. A progressive limit gauge has

  20. A.
    'Go' and 'Not go' member on the same side of the gauge
    B.
    separate 'Go' and 'Not go' members
    C.
    'Go' member at one end and 'Not go' member at the other end
    D.
    none of the above