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  1. The instrument based on the following principle is used for the measurement of oxygen only in the flue gases.

  2. A.
    Chemical absorption.
    B.
    Thermal conductivity.
    C.
    Infrared absorption.
    D.
    Paramagnetism.

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  3. Work study deals with the __________ study.

  4. A.
    time
    B.
    motion
    C.
    both (a) & (b)
    D.
    neither (a) nor (b)

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  5. Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.

  6. A.
    0.01 to 0.10
    B.
    0.2 to 0.4
    C.
    0.5 to 0.7
    D.
    0.8 to 1.0

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  7. Knocking tendency in a petrol engine decreases with increasing

  8. A.
    supercharging
    B.
    compression ratio
    C.
    wall temperature
    D.
    engine speed

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  9. Hooke's law

  10. A.
    applies to elastic deformation.
    B.
    applies beyond limit of proportionality in stress-strain curve.
    C.
    states that stress is inversely proportional to strain upto elastic limit.
    D.
    noneofthese.

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  11. Which of the following is not an ore of iron ?

  12. A.
    Chalcopyrite
    B.
    Magnetite
    C.
    Hemetite
    D.
    Limonite

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  13. Which is the most lethal weapon ?

  14. A.
    Atom (fusion) bomb
    B.
    Hydrogen bomb
    C.
    Cobalt bomb
    D.
    Neutron bomb

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  15. Reynolds number of a fluid flowing in a circular pipe is 10000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?

  16. A.
    9100
    B.
    13000
    C.
    7000
    D.
    2550

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  17. An example of unsteady non uniform flow is the flow of liquid under pressure through a

  18. A.
    tapering pipe at constant flow rate.
    B.
    tapering pipe at either decreasing or increasing flow rate.
    C.
    long pipeline of constant diameter.
    D.
    none of these.

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  19. Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?

  20. A.
    Sinter
    B.
    Coke
    C.
    Iron ore
    D.
    Limestone

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