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  1. Toughness of a material is measured by the

  2. A.
    Vicker's hardness test.
    B.
    scratch test.
    C.
    universal testing machine.
    D.
    notched bar test.

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  3. Pick out the wrong statement about nucleate boiling.

  4. A.
    Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface.
    B.
    Surface temperature is greater than the saturation temperature of the liquid.
    C.
    Heat transfer from the surface of the liquid is less than that in film boiling.
    D.
    The temperature is less than that of film boiling.

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  5. L.D. (Linz-Donawitz) converter is used in the production of

  6. A.
    copper
    B.
    steel
    C.
    zinc
    D.
    aluminium

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  7. Turning/machining of __________ usually does not require any cutting fluid.

  8. A.
    cast iron
    B.
    stainless steel
    C.
    mild steel
    D.
    copper

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  9. Powder metallurgy processing can be used for making

  10. A.
    dispersion strengthened copper rod.
    B.
    self lubricating bearing and cemented carbide.
    C.
    connecting rod.
    D.
    piston.

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  11. The moment of inertia of a body comes into play in __________ motion.

  12. A.
    curvilinear
    B.
    linear
    C.
    rotational
    D.
    none of these

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  13. Thermoplastics are never moulded using

  14. A.
    injection moulding
    B.
    blow moulding
    C.
    extrusion
    D.
    compression moulding

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  15. Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

  16. A.
    it will deliver low discharge of liquid.
    B.
    its efficiency will not be affected.
    C.
    it will not develop sufficient head to raise water.
    D.
    it will be cavitated.

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  17. While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the

  18. A.
    low impact strength.
    B.
    high flexibility.
    C.
    better finish and surface appearance.
    D.
    high plastic deformation.

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  19. The stress at which a metal fails by fatigue lies

  20. A.
    near the fracture point of the stress-strain curve.
    B.
    in the plastic range.
    C.
    in the elastic range.
    D.
    none of these.

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