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Power Plant Engineering in EE - section-1
  1. The maximum percentage gain in Regenerative feed heating cycle thermal efficiency

    2. A.

     increases with number of feed heaters increasing
    B.

     decreases with number of feed heaters increasing
    C.

     remains same unaffected by number of feed heaters
    D.

     none of the above

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  2. Rateau steam turbine is

    3. A.

     reaction steam turbine
    B.

     velocity compounded impulse steam turbine
    C.

     pressure compounded impulse steam turbine
    D.

     pressure velocity compounded steam turbine

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  3. Edward?s air pump

    4. A.

     removes air and also vapour from condenser
    B.

     removes only air from condenser
    C.

     removes only un-condensed vapour from condenser
    D.

     removes air alongwith vapour and also the condensed water from condenser

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  4. For Parson's reaction steam turbine, degree of reaction is

    5. A.

     75%
    B.

     100%
    C.

     50%
    D.

     60%

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  5. The overall efficiency of thermal power plant is equal to

    6. A.

     Rankine cycle efficiency
    B.

     Carnot cycle efficiency
    C.

     Regenerative cycle efficiency
    D.

     Boiler efficiency x turbine efficiency x generator efficiency

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  6. The thermal efficiency of the engine with condenser as compared to without condenser, for a given pressure and temperature of steam, is

    7. A.

     Higher
    B.

     Lower
    C.

     Same as long as initial pressure and temperature is unchanged
    D.

     None of the above

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  7. In steam turbines the reheat factor

    8. A.

     increases with the increase in number of stages
    B.

     decreases with the increase in number of stages
    C.

     remains same irrespective of number of stages
    D.

     none of the above

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  8. Bucket elevators are used for

    9. A.

     carrying coal in horizontal direction
    B.

     carrying coal in vertical direction
    C.

     carrying coal in any direction
    D.

     none of the above

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  9. The maximum length of a screw conveyer is about

    10. A.

     30 metres
    B.

     40 metres
    C.

     60 metres
    D.

     100 metres

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  10. Pipes carrying steam are generally made up of

    11. A.

     steel
    B.

     cast iron
    C.

     copper
    D.

     aluminium

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