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EEE :: Power Plant Engineering in EE

  1. Parson's turbine is

  2. A.

     pressure compounded steam turbine

    B.

     simple single wheel, impulse steam turbine

    C.

     simple single wheel reaction steam turbine

    D.

     multi wheel reaction steam turbine


  3. Rankine cycle operating on low pressure limit of p1 and high pressure limit of p2

  4. A.

     Has higher thermal efficiency than the Carnot cycle operating between same pressure limits

    B.

     Has lower thermal efficiency than Carnot cycle operating between same pressure limit

    C.

     Has same thermal efficiency as Carnot cycle operating between same pressure limits

    D.

     May be more or less depending upon the magnitude of p1 and p2


  5. Binary vapor cycles are used to

  6. A.

     Increase the performance of the condenser

    B.

     Increase the efficiency of the plant

    C.

     Increase efficiency of the turbine

    D.

     None of the above


  7. The value of the reheat factor is of the order of

  8. A.

     0.8 to 1.0

    B.

     1.0 to 1.05

    C.

     1.1 to 1.5

    D.

     above 1.5


  9. Secondary air is the air used to

  10. A.

     reduce the flame length

    B.

     increase the flame length

    C.

     transport and dry the coal

    D.

     provide air round the burners for getting optimum combustion


  11. The draught produced by steel chimney as compared to that produced by brick chimney for the same height is

  12. A.

     Less

    B.

     More

    C.

     Same

    D.

     May be more or less


  13. Example of overfeed type stoker is

  14. A.

     chain grate

    B.

     spreader

    C.

     travelling grate

    D.

     all of the above


  15. In coal preparation plant, magnetic separators are used to remove

  16. A.

     Dust

    B.

     Clinkers

    C.

     Iron particles

    D.

     Sand


  17. Steam pressure in a steam power station, which is usually kept now-a-days is of the order of

  18. A.

     20 kgf/cm²

    B.

     50 kgf/cm²

    C.

     80 kgf/cm²

    D.

     100 kgf/cm²


  19. The pressure at the furnace is minimum in case of

  20. A.

     forced draught system

    B.

     induced draught system

    C.

     balanced draught system

    D.

     natural draught system