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1. Rubbing both hands together for warmth

Kinetic Energy to THERMAL Energy

2. A FALLING object speeding up

Gravitational Potential Energy to Kinetic Energy

3. Using battery-powered torchlight

In the battery: Chemical to Electrical Energy

In the bulb: Electrical to RADIANT Energy

4.In Geothermal Power Plant

HEAT Energy to Electrical Energy

5.In Thermocouple

Heat Energy to Electrical Energy

6.In Hydroelectric Dams

Gravitational potential energy to Electric Energy

7.In Electric Generator

Kinetic energy / Mechanical work to Electric Energy

8.In Windmills

Wind Energy to Mechanical Energy or Electric Energy

9.In OTEC

Heat Energy to Electric Energy or Mechanical Energy

10.Using Microphone

Sound Energy to Electric Energy

11.Photosynthesis in Plants

Solar Energy to Chemical Energy

12. In Piezoelectrics

Strain to Electric Energy

13.In Electric lamp

Electric Energy to Heat and Light Energy

14.Burning of wood

Chemical energy to Heat and Light Energy

15.In Fuel cells

Chemical Energy to Electric Energy

16.In steam engine

The heat energy to Mechanical Energy

17.In Electric heater

Electric Energy to Heat

hope it HELPS you

(Scenario)

(Energy conversions involved)

Format of Answer