Question

Name three devices/industries in which heat energy is put to some useful work

Answer 1

Answer:

thermoelectric power, house steam engine and modern automobile

Answer 2

Answer:

i)In thermoelectric power houses,it is the heat energy of burning coal which is used to raise steam.The steam then runs the turbines of the generator and produces electric energy.

ii)Automobiles need heat energy.Whether it is a moped or a heavy truck or diesel railway engine, all use heat energy of burning petrol or diesel for doing work.

iii)We ourselves are dependent on heat energy for doing work.The food which we consume,burns slowly in our cells to liberate heat energy.It is the heat energy which makes us to do the muscular work.