Question

1) What is the principle of solar heating device?
2) How AC generator can be converted to DC?
3) Write two advantages of using solar cells.

Answer 1

Answers for the above questions are as follows:

1) Solar heating device is worked on the principle of photovoltaic effect. This device collects the energy from the sun and converted into heat energy.

2) AC generator can be converted into a DC generator in two different methods.

If we can install a rectifier in the output circuit of the AC generator which will change AC into DC generator.

DC generator contains only one polarity so the current in DC generator is unidirectional.

3) we have many advantages of using solar cells.

• It requires very little maintenance.

• It is pollution-free.

• It is renewable energy.