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Mechanical Engineering :: Workshop Technology

  1. The upsetting is a process of

  2. A.

     Increasing the cross-section of a bar

    B.

     Reducing the cross-section of a bar

    C.

     Joining the two surfaces of metal under pressure after heating

    D.

     Bending of a bar


  3. A pattern maker's shrinkage rule considers

  4. A.

     All pattern allowances

    B.

     Only shrinkage allowance

    C.

     All materials to be cast

    D.

     All materials of the pattern


  5. In welding copper alloys with TIG arc welding

  6. A.

     Direct current with straight polarity is used

    B.

     Direct current with reversed polarity is used

    C.

     Alternating current is used

    D.

     Any one of these


  7. According to Indian standard specifications, 100 H6/g5 means that.

  8. A.

     Basic size is 100 mm

    B.

     Actual size is 100 mm

    C.

     Difference between the actual size and basic size is 100 mm

    D.

     None of the above


  9. A basic shaft is one whose

  10. A.

     Lower deviation is zero

    B.

     Upper deviation is zero

    C.

     Lower and upper deviations are zero

    D.

     None of these


  11. A basic hole is one whose

  12. A.

     Lower deviation is zero

    B.

     Upper deviation is zero

    C.

     Lower and upper deviations are zero

    D.

     None of these


  13. In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to

  14. A.

     d

    B.

     1.5 d

    C.

     3d

    D.

     6d


  15. The welding set up is said to have straight polarity, when

  16. A.

     Work is connected to the positive terminal and the electrode holder to the negative terminal

    B.

     Work is connected to the negative terminal and the electrode holder to the positive terminal

    C.

     Work is connected to the positive terminal and the electrode holder is earthed

    D.

     Work is connected to the negative terminal and the electrode holder is earthed


  17. The algebraic difference between the minimum limit and the basic size is called

  18. A.

     Actual deviation

    B.

     Upper deviation

    C.

     Lower deviation

    D.

     Fundamental deviation


  19. Riddle is used for

  20. A.

     Smoothing and cleaning out depressions in the mould

    B.

     Cleaning the moulding sand

    C.

     Moistening the sand around the edge before removing pattern

    D.

     Reinforcement of sand in the top part of moulding box