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  1. High __________ of cast iron makes it suitable for use in machine beds.

  2. A.
    compressive strength
    B.
    endurance strength
    C.
    damping capacity
    D.
    tensile strength

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  3. Which of the following alloying elements reduces the formation of iron sulphide in steel ?

  4. A.
    Cobalt
    B.
    Nickel
    C.
    Manganese
    D.
    Vanadium

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  5. In age-hardenable alloys, maximum ductility is obtained

  6. A.
    in as cast state.
    B.
    immediately after solution treatment and subsequent quenching.
    C.
    after optimum ageing.
    D.
    after overageing.

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  7. Prandtl mixing length in turbulent flow signifies the

  8. A.
    average distance perpendicular to the mean flow covered by the mixing particles.
    B.
    wavelength corresponding to the lowest frequency present in the flow field.
    C.
    ratio of mean free path to characteristic length of the flow field.
    D.
    magnitude of turbulent kinetic energy.

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  9. Magnesium addition to cast iron increases its

  10. A.
    corrosion resistance.
    B.
    creep strength.
    C.
    ductility and strength in tension.
    D.
    hardness.

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  11. The dimensions of Planck's constant is the same as that of the

  12. A.
    kinetic energy
    B.
    momentum
    C.
    electrostatic potential
    D.
    none of these

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  13. 1% concentration of water vapor in air is equivalent to __________ ppm (parts per million).

  14. A.
    10000
    B.
    1000
    C.
    100
    D.
    10

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  15. The ratio of coil diameter to wire diameter of a spring is called the spring

  16. A.
    index
    B.
    deflection
    C.
    form co-efficient
    D.
    none of these

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  17. The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.

  18. A.
    ambient
    B.
    dry bulb
    C.
    dew point
    D.
    wet bulb

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  19. Dialysis is the process of separating substances in the

  20. A.
    colloidal state from those present in the true solutions.
    B.
    colloidal state from those present in the suspensions.
    C.
    suspension from those present in the solutions.
    D.
    none of these.

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