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Mechanical Engineering :: Engineering Materials

Engineering Materials - Section 1
Engineering Materials - Section 2
Engineering Materials - Section 3
Engineering Materials - Section 4
Engineering Materials - Section 5
Engineering Materials - Section 6

  1. Pearlite consists of

    2. A.
    13% carbon and 87% ferrite
    B.
    13% cementite and 87% ferrite
    C.
    13% ferrite and 87% cementite
    D.
    6.67% carbon and 93.33% iron

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  2. Incoloy, Hastelloy and Vitallium are __________ temperature alloys.

    3. A.
    high
    B.
    low

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  3. Quenching is not necessary when hardening is done by

    4. A.
    case hardening
    B.
    flame hardening
    C.
    nitriding
    D.
    any one of these

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  4. The iron ore in the charge of blast furnace acts as an iron bearing mineral.

    5. A.
    True
    B.
    False

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  5. Beryllium bronze has

    6. A.
    high yield point
    B.
    high fatigue limit
    C.
    both (a) and (b)
    D.
    none of these

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  6. The aluminium alloy, mainly used, for anodized utensil manufacture, is

    7. A.
    duralumin
    B.
    Y-alloy
    C.
    magnalium
    D.
    hindalium

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  7. The toughness of a material __________ when it is heated.

    8. A.
    remains same
    B.
    decreases
    C.
    increases

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  8. The coordination number of a face centred cubic space lattice is

    9. A.
    six
    B.
    twelve
    C.
    eighteen
    D.
    twenty

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  9. Spheroidal grey cast iron has graphite flakes.

    10. A.
    True
    B.
    False

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  10. Bronze is an alloy of

    11. A.
    copper and zinc
    B.
    copper and tin
    C.
    copper, tin and zinc
    D.
    none of these

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