help!!!! (homework!)?

Question

what are at least five different electrical appliances (loads).
describe (please!) the energy conversions that occur with each one and the purpose(s) of each conversion process.

what are the useful energy output of it and non-useful energy output

Answer 1

1)Hair dryer: It transforms electrical energy into kinetic(rotor) and heat (resistance)

2)Kitchen Oven: It transforms electrical energy into heat

3)Lamp: It transforms electrical energy into light and heat

4)Electric Heater: It transforms electrical energy into heat

5)Television: It transforms electrical energy into light

Answer 2

1)Electric Heater-electric energy to heat energy-to heat stuff
2)Electric Light Bulb-electric energy to light energy(energy also dissipated in the form of heat)-use is self explanatory
3)Rechargeable Battery-Electric energy to chemical energy-purpose is to restore the electrolyte of the battery.
4)Table Fan-electric energy to mechanical energy(intermediate conversions not so important)
5)Speakers-electric energy to sound energy(intermediate conversions not so important)

Answer 3

Light bulb - electricity is converted to light and heat - to provide light

Refrigerator - electrical energy is converted to mechanical energy and is used to extract heat from inside the fridge to outside . AC is similar

Washing machine - electrical to mechanical energy conversion - to tumble the clothes and clean them

Oven - electrical to heat - to cook food.

Fan - electrical to mechanical - to provide air circulation

Phone - electrical to electrical / electronic - to communicate