Advertisements
Advertisements
Question
State two disadvantages of using wind energy for generating electricity.
Advertisements
Solution
Disadvantages of using wind energy:
1. The establishment of a wind farm is expensive.
A large area of land is needed for the establishment of a wind farm.
RELATED QUESTIONS
Explain how, geothermal energy is used to generate electricity.
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
Give one example to show the conversion of potential energy to kinetic energy when put in use.
What is wind energy?
How is kinetic energy possessed by a moving body measured?
State the energy transformation on the following:
Electricity obtained from hydro energy.
Give one example when:
Electric energy changes to sound energy.
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
