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Question
State two disadvantages of using wind energy for generating electricity.
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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
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
What is hydro energy?
Explain the principle of producing electricity using the nuclear energy.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
What do you understand by the potential energy of the body?
What kind of energy is possessed in a situation when?
Water stored in dams.
State two advantages and two disadvantages of using hydro-energy for producing electricity.
Give one example when:
Potential energy changes to electric energy.
Give one example when:
Electrical energy to heat energy.
Can you tell?
What are the various forms of energy?
