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What is the meaning of the following symbol? Write your role accordingly.
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What is the meaning of the following symbol? Write your role accordingly.
Concept: undefined >> undefined
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Explain the meaning of the following symbol:
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Write limitations in an electric generator using wind energy.
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Identify the following symbol and state their significance.
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State whether True/False:
The 'Devrai' reserved in the name of God in various places is required in the present time as well.
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What is the role of IUCN?
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What is biodiversity?
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How can we protect the environment?
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Answer the following questions from figure:
- With reference to point B, potential energy of how much water reservoir in the dam will be converted into kinetic energy?
- What will be the effect on electricity generation, if the channel taking water to turbine starts at point A?
- What will be the effect on electricity generation, if the channel taking water to turbine starts at point C?
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Observe the given picture and answer the questions.
Questions:
- Identify the given diagram.
- What is the source of energy in this project?
- Why this source is supposed to be ecofriendly?
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Which of the following is used in solar cooker to harvest the solar energy?
a) Solar panels
b) Silicon cell
c) Mirrors
d) Glass lid
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Observe the connections of cells shown in the following images.
i. Which connection will give maximum potential difference?
ii. Give one advantage and one disadvantage of this energy.
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Explain in brief the sensitive issues of general public about disaster?
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Draw neat and labelled diagram.
One solar panel produces a potential difference of 18 V and current of 3 A. Describe how you can obtain a potential difference of 72 Volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel.
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Write a short note on electrical energy generation and environment.
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Write notes.
Disaster management Authority
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On the basis of the structure of disaster management authority, form the same for your school.
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Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.
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Make a table based on forms of energy and corresponding devices:
| Forms of Energy | Devices | |
| a. | Electric | _________ |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | __________ |
| d. | _________ | Solar cooker, Solar heater |
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