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  1. Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as

  2. A.
    Gr0.25, Gr
    B.
    Gr0.25, Gr0.33
    C.
    Gr, Gr0.25
    D.
    Gr0.33, Gr0.25

  3. If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity

  4. A.
    is trebled.
    B.
    remains unchanged.
    C.
    decreases by a factor of 3.
    D.
    decreases by a factor of 1/3.

  5. Copper deposits are found in India at the following location:

  6. A.
    Kudremukh
    B.
    Kolar
    C.
    Khetri
    D.
    Ramagundam

  7. Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

  8. A.
    10-3
    B.
    103
    C.
    10-15
    D.
    l015

  9. Corrosion of metals can not be prevented by its

  10. A.
    tempering
    B.
    chromising
    C.
    aluminising
    D.
    alloying

  11. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

  12. A.
    Grashoff number.
    B.
    Grashoff number & Reynolds number.
    C.
    Reynolds number.
    D.
    Grashoff number & Prandtl number.

  13. The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

  14. A.
    parabolic
    B.
    hyperbolic
    C.
    straight line
    D.
    none of these

  15. Energy of the sun arises mainly from __________ reactions.

  16. A.
    fusion
    B.
    fission
    C.
    combustion
    D.
    none of these

  17. Which of the following fastening devices has a head at one end and a nut fitted to the other ?

  18. A.
    Bolt
    B.
    Stud
    C.
    Top bolt
    D.
    None of these

  19. Sudden fall of atmospheric pressure by a large amount is an indication of the

  20. A.
    rain
    B.
    cold wave
    C.
    storm
    D.
    fair weather