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  1. A material is capable of resisting softening at high temperature, because of its property termed as

  2. A.
    hot temper
    B.
    hot hardness
    C.
    fatigue
    D.
    creep

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  3. Cascade control is

  4. A.
    the continuous adjustment of the set point index of an automatic control loop by a primary (master) controller.
    B.
    used when changes in process conditions cause serious upsets in the controlled variable.
    C.
    useful to control flow from temperature.
    D.
    all 'a', 'b' & 'c'.

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  5. Softening of hardned steel is done by its

  6. A.
    normalising
    B.
    tempering
    C.
    annealing
    D.
    carburising

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  7. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

  8. A.
    9:1
    B.
    17 : 1
    C.
    23 : 1
    D.
    29 : 1

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  9. Which of the following alloying elements is present in maximum percentage in high speed steel.

  10. A.
    Molybdenum
    B.
    Chromium
    C.
    Tungsten
    D.
    Vanadium

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  11. __________ is a non volatile film forming constituent of a paint.

  12. A.
    Thinner
    B.
    Dryer
    C.
    Drying oil
    D.
    none of these

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  13. According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.

  14. A.
    0.5
    B.
    2
    C.
    2
    D.
    3/2

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  15. Transformer cores are normally made from

  16. A.
    soft ferrites
    B.
    high purity iron
    C.
    grain oriented Fe-Si alloy
    D.
    Al-Ni-Co alloy

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  17. __________ test is the appropriate test to determine whether a material is ductile or brittle.

  18. A.
    Impact
    B.
    Cupping
    C.
    Hardness
    D.
    Tensile

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  19. Main constituent of bone ash is

  20. A.
    ammonium phosphate.
    B.
    calcium phosphate.
    C.
    animal charcoal.
    D.
    ammonium sulphate.

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