Complete the following flow chart :(a) Generation of electrical energy using thermal energy :[Flow chart: ‘Fuel Coal’ → [blank] → [blank] → ‘Generator’ → ‘Electrical energy’, with a long blank box below joined by arrows to the first and second boxes.…

Answer:

(a) Generation of electrical energy using thermal energy:

Fuel coal → Boiler (conversion of water to steam) → Steam turbine → Generator → Electrical energy

Long box below: System for converting steam back to water (condenser) — the steam from the turbine goes to it, and the water from it is sent back to the boiler.

(b) Energy transformation in thermal power plant:

Chemical energy in coal → Thermal energy → Kinetic energy in steam → Kinetic energy in turbine → Electrical energy

Coal is burnt in the boiler and its chemical energy is converted into thermal energy, which converts water into steam at high temperature and pressure. The steam strikes the blades of the turbine and rotates it (kinetic energy of steam → kinetic energy of turbine). The turbine rotates the generator, which produces electrical energy. The used steam is condensed back to water and pumped to the boiler again.