describe electricity generation from hydro power and solar based system
Answers
Hydro power is based on the principle of a simple dynamo which convert mechanical energy to electrical energy. the dam(enclosed) water is forced out of some opening which comes out with huge force turns a turbine(advanced bicycle dynamo) hence generating alternating current which
solar system is make use of thermal emission of electron from surface of metal using a semi conductor
the semi conductor consist of two layers (just like two slice of bread)
upper layer (positive layer or p-junction ) and lower layer (negative layer or
n-junction ) and in between them is gap known as (p-n) junction connected by a wire, as sun strikes the upper layer ,electron becomes excited(heated) and moves through the wire to lower layer hence generating direct current (DC) which can be stored in a battery for present or later use