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  • Question
  • Operating condition in the electrical dehydrators for crude oil is about


  • Options
  • A. 6.5 kgf/Cm2 & 95°C.
  • B. 1 atm. & 110 °C.
  • C. 20 kgf/cm2 & 110°C.
  • D. 50 atm. and 150°C.

  • Correct Answer
  • 6.5 kgf/Cm2 & 95°C. 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Pick out the additive property of a lube oil out of following.

    • Options
    • A. °API gravity
    • B. Specific gravity
    • C. Viscosity
    • D. Flashpoint
    • Discuss
    • 2. A good lubricant should have high

    • Options
    • A. viscosity index
    • B. volatility
    • C. pour point
    • D. none of these
    • Discuss
    • 3. Crude oil is pumped by a __________ pump.

    • Options
    • A. gear
    • B. centrifugal
    • C. screw
    • D. reciprocating
    • Discuss
    • 4. Paraffin base crude oil as compared to asphalt base crude gives

    • Options
    • A. higher yield of straight run gasoline.
    • B. higher octane number gasoline.
    • C. lower viscosity index lube oil.
    • D. poorer yield of lube oil.
    • Discuss
    • 5. Viscosity index of a lubricating oil

    • Options
    • A. is the measure of its flash point.
    • B. is the measure of variation of viscosity with temperature.
    • C. should be low.
    • D. none of these.
    • Discuss
    • 6. For gasoline, the flash point (<50°C) is determined by the

    • Options
    • A. Abel apparatus.
    • B. Pensky-Marten's apparatus.
    • C. Saybolt chromometer.
    • D. none of these.
    • Discuss
    • 7. __________ is not an important refinery process for upgrading the quality of lubricating oil.

    • Options
    • A. Deoiling
    • B. Solvent refinning
    • C. Clay treatment
    • D. Hydrotreatment
    • Discuss
    • 8. __________ test is done to find out the softening point of bitumen.

    • Options
    • A. Impact
    • B. Ball and ring
    • C. Flame
    • D. Viscosity
    • Discuss
    • 9. Neon gas is

    • Options
    • A. flammable in nature.
    • B. used in color discharge tube.
    • C. filled in lamps having tungsten filament.
    • D. all (a), (b) and (c).
    • Discuss
    • 10. In the Lurgi coal gasifier

    • Options
    • A. coking coals cannot be used.
    • B. low carbon conversion efficiency is achieved.
    • C. entrainment of solids is higher.
    • D. large quantity of coal can be processed.
    • Discuss


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