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Mechanical Engineering :: Workshop Technology

  1. In shielded arc welding

  2. A.

     Large electrode is used

    B.

     Welding rod coated with slag is used

    C.

     Welding rod coated with fluxing material is used

    D.

     None of the above

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  3. The cold chisels are made from

  4. A.

     Cast iron

    B.

     Mild steel

    C.

     High speed steel

    D.

     Cast tool steel

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  5. A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?

  6. A.

     The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction

    B.

     The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction

    C.

     The bottom and middle roll rotate in the same direction

    D.

     Any one of the above

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  7. The maximum flame temperature occurs

  8. A.

     At the outer cone

    B.

     At the inner cone

    C.

     Between the outer and inner cone

    D.

     At the torch tip

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  9. The temperature produced by oxy-hydrogen flame is about

  10. A.

     1800°C

    B.

     2100°C

    C.

     2400°C

    D.

     3200°C

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  11. The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is

  12. A.

     Outside micrometer

    B.

     Inside micrometer

    C.

     Depth gauge micrometer

    D.

     Vernier caliper

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  13. According to Indian standards, the total numbers of tolerance grades are

  14. A.

     8

    B.

     12

    C.

     18

    D.

     20

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  15. Metal patterns are used for

  16. A.

     Small castings

    B.

     Large castings

    C.

     Complicated castings

    D.

     Large scale production of castings

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  17. The machining allowance provided on patterns depends upon

  18. A.

     Type of casting metal

    B.

     Size and shape of casting

    C.

     Method of casting used

    D.

     All of these

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  19. The metal patterns as compared to wooden patterns require less

  20. A.

     Shrinkage allowance

    B.

     Machining allowance

    C.

     Draft allowance

    D.

     Distortion allowance

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