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Power Plant Engineering in EE - section-1
  1. The value of reheat factor normally varies from

    2. A.

     0.5 to 0.6
    B.

     0.9 to 0.95
    C.

     1.02 to 1.06
    D.

     1.2 to 1.6

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  2. The critical pressure ratio of a convergent nozzle is defined as

    3. A.

     the ratio of outlet pressure to inlet pressure of nozzle
    B.

     the ratio of inlet pressure to outlet pressure of nozzle
    C.

     the ratio of outlet pressure to inlet pressure only when mass flow rate per unit area is min-imum
    D.

     the ratio of outlet pressure to inlet pressure only when mass flow rate = c

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  3. In fuel cell, the ______ energy is converted into electrical energy.

    4. A.

     mechanical
    B.

     chemical
    C.

     heat
    D.

     sound

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  4. Caking coals are those which

    5. A.

     burn completely
    B.

     burn freely
    C.

     do not form ash
    D.

     form lumps or masses of coke

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  5. TravelUng grate stoker can burn coals at the rates of

    6. A.

     50 - 75 kg/m per hour
    B.

     75 - 100 kg/m per hour
    C.

     100— - kg/m per hour
    D.

     150 - 200 kg/m² per hour

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  6. For forced draught system, the function of chimney is mainly

    7. A.

     to produce draught to accelerate the combustion of fuel
    B.

     to discharge gases high up in the atmosphere to avoid hazard
    C.

     to reduce the temperature of the hot gases discharged
    D.

     none of the above

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  7. In a steam power plant, the function of a condenser is

    8. A.

     to maintain pressure below atmospheric to increase work output from the primemover
    B.

     to receive large volumes of steam exhausted from steam prime mover
    C.

     to condense large volumes of steam to water which may be used again in boiler
    D.

     all of the above

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  8. For the same draught produced the power of induced draught fan as compared to forced draught fan is

    9. A.

     less
    B.

     more
    C.

     same
    D.

     not predictable

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  9. The commercial sources of energy are

    10. A.

     solar, wind and biomass
    B.

     fossil fuels, hydropower and nuclear energy
    C.

     wood, animal wastes and agriculture wastes
    D.

     none of the above

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  10. The isentropic expansion of steam through nozzle for the steam initially superheated at inlet is approximated by equation

    11. A.

     pvls=C
    B.

     pv1126 = C
    C.

     pv1A = C
    D.

     pv = C

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