Observe the diagram and answer the following questions :[Diagram of a thermal power plant: fuel and air enter a boiler, the boiler is connected to a stack that sends combustion gases out; steam from the boiler turns a turbine which drives a generator…

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Q.3 (v) Observe the diagram and answer the following questions : [Diagram of a thermal power plant: fuel and air enter a boiler, the boiler is connected to a stack that sends combustion gases out; steam from the boiler turns a turbine which drives a generator; the turbine is connected to a condenser with warm water, a pump and a cooling tower that releases vapour and hot air, and cooled water returns to the condenser.] (a) Which type of energy is created in the above diagram ? (b) Which type of fuel is used in power plant ? (c) State one problem created in such type of power plant.

Doubtly AI · Accepted Answer

Answer: (a) Electrical energy (from the heat energy of the fuel). (b) Coal. (c) Air pollution. (a) The chemical energy of the fuel is changed into heat energy in the boiler, the heat makes steam, the steam turns the turbine (mechanical energy) and the turbine drives the generator, which produces electrical energy. (b) Coal is burnt in the boiler of a thermal power plant. (c) Burning coal gives out carbon dioxide, sulphur dioxide and nitrogen oxides along with fly ash. These pollute the air, cause acid rain and global warming, and harm the health of people living nearby. Large amounts of water are also needed for cooling, and the hot water released raises the temperature of the river (thermal pollution).

Observe the diagram and answer the following questions :[Diagram of a thermal power plant: fuel and air enter a boiler, the boiler is connected to a stack that sends combustion gases out; steam from the boiler turns a turbine which drives a generator…

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