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  • Answer question numbers 3(a) to 3(d) on the basis of your understanding of the following paragraph and the related studies concepts. The Tehri dam is the highest dam in India and one of the highest in the World. The Tehri dam withholds a reservoir of c

Answer question numbers 3(a) to 3(d) on the basis of your understanding of the following paragraph and the related studies concepts. The Tehri dam is the highest dam in India and one of the highest in the World. The Tehri dam withholds a reservoir of capacity 4.0 km3 and surface area 52 km2. It is used for irrigation, municipal water supply and the generation of 1000 MW of hydro electricity. The Tehri Dam has been the object of protests. Environment activist Shri Sunder Lal Bahuguna led the “Anti Tehri Dam Movement” from 1980s to 2014. The protest was against the displacement of town inhabitants and environmental consequences of the weak ecosystem. The relocation of more than 1,00,000 people from the area has led to protracted legal battles over resettlement rights and ultimately resulted in the delayed completion of the project.
(a) How is hydropower harnessed ?
(b) Define 1 MW.
(c) Mention two disadvantages of constructing Tehri Dam.
(d) What happens when water from great heights is made to fall on blades of turbine ?

 

 

 

 
 
 
 
 

Answers (1)

a)  Water is concentrated in a reservoir behind the dam and then the stored water is released to turn a turbine in order to produce electricity.

b) 1 MW is equal to 1000000 W

c) Construction of Tehri Dam has resulted in the large scale destruction of biodiversity in the catchment area and also in large scale displacement of people.

d) The blades of the turbine move and convert the kinetic energy of water into electric energy.

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Safeer PP

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