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  1. In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?

  2. A.
    Zirconia
    B.
    Alumina
    C.
    Bakelite
    D.
    Tungsten carbide

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  3. Enzymes belong to the category of

  4. A.
    proteins
    B.
    carbohydrates
    C.
    vitamins
    D.
    fats

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  5. What is the value of included angle of a triangular notch for maximum discharge ?

  6. A.
    30°
    B.
    60°
    C.
    90°
    D.
    120°

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  7. For separating small pieces of metal from engine oil of a car, the best separating technique is the

  8. A.
    chromatography
    B.
    evaporation
    C.
    filtration
    D.
    fractional distillation

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  9. Heat flow across a hollow sphere of inner radius 'r1' and outer radius 'r2' is directly proportional to

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  11. On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.

  12. A.
    frequency
    B.
    amplitude
    C.
    damping
    D.
    none of these

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  13. Fire refining process is employed in case of

  14. A.
    tin
    B.
    copper
    C.
    zinc
    D.
    aluminium

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  15. Larger length & diameter water pipes are made by

  16. A.
    electrical resistance welding.
    B.
    die casting.
    C.
    semi-centrifugal casting.
    D.
    continuous casting.

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  17. Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

  18. A.
    90% tungsten carbide and 10% cobalt.
    B.
    70% aluminium oxide & 30% silica.
    C.
    30% nickel, 15% chromium & 55% tungsten.
    D.
    65% tungsten & 35% zirconium.

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  19. The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the

  20. A.
    critical point.
    B.
    curie temperature.
    C.
    inversion temperature.
    D.
    eutectic temperature.

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