In hydroelectricity power………………
a) Kinetic energy is transferred to potential
b) Potential energy is transferred to kinetic
c) Solar energy is transferred to wind energy
d) Wind energy is transferred to solar energy
Explanation: Hydroelectricity power stations use the kinetic energy in moving water. But the water comes from behind a dam built across a river valley. The water high up behind the dam contains potential energy.
In order to produce solar energy during sunlight, where the energy is stored in the batteries?
a) nickel sulfur
b) zinc cadmium
c) nickel zinc
d) nickel cadmium
Explanation: Nickel Cadmium cells offers along service life thereby ensuring a high degree of the economy. In the PV industry, Nickel Cadmium battery cells are majorly used for the energy storage technology from manufacturers and users of PV of grid systems.
How many forms of fossil fuels are there……..
a) 3
b) 4
c) 5
d) 6
Explanation: There are three major forms of fossil fuels they are coal, oil and natural gas. They formed from organic remains of plants and animals that were converted into coal, oil and natural gas by exposure to heat and the pressure of the earth’s crust over millions of years.
Efficiency:
A light bulb is designed to convert …………
a) electric energy into light energy
b) light energy into electric energy
c) solar energy into electrical energy
d) electrical energy into solar energy
A car engine is designed to convert…………
a) kinetic energy into electric energy
b) electric energy into kinetic energy
c) kinetic energy into chemical potential energy
d) chemical potential energy into kinetic energy
Explanation: A car engine is designed to convert chemical potential energy stored in the fuel into kinetic energy for the car.
