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Thermal power station: Quiz


Question 1: A thermal power station is a ________ in which the prime mover is steam driven.
HydroelectricityElectricity generationNuclear powerPower station

Question 2: Since the condenser temperature can almost always be kept significantly below 100 °C where the vapor pressure of water is much less than atmospheric pressure, the condenser generally works under ________.
Outer spaceVacuumVacuum pumpUniverse

Question 3: Such condensers use steam ejectors or ________-driven exhausters for continuous removal of air and gases from the steam side to maintain vacuum.
Electrical generatorLinear motorElectric motorDirect torque control

Question 4: The condenser generally uses either circulating cooling water from a ________ to reject waste heat to the atmosphere, or once-through water from a river, lake or ocean.
Power stationCoalCooling towerNuclear power

Question 5: The heat content (joules or Btu) in the steam is referred to as ________.
EnthalpyGibbs free energyHelmholtz free energyInternal energy

Question 6: DM water make-up is generally added at the steam space of the ________ (i.e., the vacuum side).
Thermal power stationFeedwater heaterSurface condenserChlorine

Question 7: ________ is captured and removed from the flue gas by electrostatic precipitators or fabric bag filters (or sometimes both) located at the outlet of the furnace and before the induced draft fan.
Fly ashChromiumCarbonBarium

Question 8: This waste heat can go through a condenser and be disposed of with cooling water or in ________.
Nuclear powerPower stationCooling towerCoal

Question 9: Furnace ________ due to any accumulation of combustible gases after a trip-out are avoided by flushing out such gases from the combustion zone before igniting the coal.
EnergySunExplosive materialExplosion

Question 10: In the case of a conventional steam-electric power plant utilizing a drum boiler, the surface condenser removes the ________ from the steam as it changes states from vapour to liquid.
HalogenActinoidEnthalpy of vaporizationNoble gas


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