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Power Plant Engineering in EE - section-1
  1. The amount of air which is supplied for complete combustion is called

    2. A.

     primary air
    B.

     secondary air
    C.

     tertiary air
    D.

     none of the above

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  2. Reheat factor is the ratio of

    3. A.

     isentropic heat drop to useful heat drop
    B.

     adiabatic heat drop to isentropic heat drop
    C.

     cumulative actual enthalpy drop for the stages to total is isentropic enthalpy heat drop
    D.

     none of the above

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  3. Curtis turbine is

    4. A.

     reaction steam turbine
    B.

     pressure velocity compounded steam turbine
    C.

     pressure compounded impulse steam turbine
    D.

     velocity compounded impulse steam turbine

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  4. Mercury is a choice with steam in binary vapour cycle because it has

    5. A.

     higher critical temperature and pressure
    B.

     higher saturation temperature than other fluids
    C.

     relatively low vapourisation pressure
    D.

     all above

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  5. In regenerative cycle feed water is heated by

    6. A.

     exhaust gases
    B.

     heaters
    C.

     draining steam from the turbine
    D.

     all above

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  6. The energy radiated by sun on a bright sunny day is approximately

    7. A.

     700 W/m²
    B.

     800 W/m²
    C.

     1 kW/m²
    D.

     2 kW/m²

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  7. The average ash content in Indian co als is about

    8. A.

     5%
    B.

     10%
    C.

     15%
    D.

     20%

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  8. The main source of production of biogas is

    9. A.

     human waste
    B.

     wet cow dung
    C.

     wet livestock waste
    D.

     all above

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  9. Deaerative heating is done to

    10. A.

     Heat the water
    B.

     Heat the air in the water
    C.

     Remove dissolved gases in the water
    D.

     None of these

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  10. Regenerative cycle thermal efficiency

    11. A.

     is always greater than simple Rankine thermal efficiency
    B.

     is greater than simple Rankine cycle thermal efficiency only when steam is bled at particu-lar pressure
    C.

     is same as simple Rankine cycle thermal efficiency
    D.

     is always less than simple Rankine cycle thermal efficiency

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