logo

CuriousTab

CuriousTab

Discussion


Home Chemical Engineering Chemical Engineering Basics Comments

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


  • Options
  • A. Gr0.25, Gr
  • B. Gr0.25, Gr0.33
  • C. Gr, Gr0.25
  • D. Gr0.33, Gr0.25

  • Correct Answer
  • Gr0.25, Gr 


  • Chemical Engineering Basics problems


    Search Results


    • 1. Corrosion of metals can not be prevented by its

    • Options
    • A. tempering
    • B. chromising
    • C. aluminising
    • D. alloying
    • Discuss
    • 2. Evaporative cooling process employs a combination of cooling and humidification in which the

    • Options
    • A. sensible heat is added.
    • B. sensible heat is removed and the latent heat is added.
    • C. latent heat is removed.
    • D. sensible heat is added and latent heat is removed.
    • Discuss
    • 3. Maxwell's thermodynamic relations applies to the

    • Options
    • A. chemical systems in equilibrium.
    • B. mechanical systems in equilibrium.
    • C. irreversible thermodynamic processes.
    • D. reversible thermodynamic processes.
    • Discuss
    • 4. If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

    • Options
    • A. critical
    • B. breeder
    • C. fertile
    • D. heterogenous
    • Discuss
    • 5. Machinability of hard alloys and tool steels is improved by

    • Options
    • A. spherodising
    • B. annealing
    • C. tempering
    • D. normalising
    • Discuss
    • 6. Annealing ofwhite cast iron produces __________ iron.

    • Options
    • A. grey
    • B. nodular
    • C. malleable
    • D. spheroidal
    • Discuss
    • 7. An alloy of Fe - 0.4 % C is

    • Options
    • A. cast iron.
    • B. hypo-eutectoid steel.
    • C. hyper-eutectoid steel.
    • D. eutectoid steel
    • Discuss
    • 8. Auto collimator is used to check

    • Options
    • A. flatness
    • B. angle
    • C. rotor balancing
    • D. roughness
    • Discuss
    • 9. All of the following alloying elements of steel increases hardness but sacrifice ductility, except

    • Options
    • A. nickel
    • B. vanadium
    • C. molybdenum
    • D. chromium
    • Discuss
    • 10. In the blast furnace, incorporation of water vapour in the blast gives the following effect.

    • Options
    • A. Increases the reducing potential of the gas.
    • B. Increases the flame temperature.
    • C. No significant change occurs.
    • D. Increases the hydrogen content in the metal.
    • Discuss


    Comments

    There are no comments.

Enter a new Comment