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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write a short note on electrical energy generation and environment.

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प्रश्न

Write a short note on electrical energy generation and environment. 

टीपा लिहा
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उत्तर

  1. Today, the generation of electrical energy has become essential, and life without electricity is almost unimaginable. Electrical energy is produced using various methods. A generator, based on the principle of electromagnetic induction, is used for this purpose. The generator is rotated by a turbine, which is driven by different energy sources.
  2. These energy sources can be renewable (such as wind and sunlight) or non-renewable (such as coal, petroleum, natural gas, and nuclear fuels). Renewable sources like wind and solar energy are environmentally friendly and economical. They do not cause pollution during operation.
  3. However, non-renewable sources such as coal, natural gas, and nuclear fuels can harm the environment. Burning fossil fuels releases soot particles and greenhouse gases like carbon dioxide and carbon monoxide. These gases contribute to air pollution and global warming.
  4. Nuclear energy also produces radioactive waste, which is harmful to both humans and the environment if not handled properly. Therefore, it is important to adopt eco-friendly alternatives to fossil fuels. Switching to green energy sources is essential for protecting our planet.
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पाठ 5: Towards Green Energy - Exercises [पृष्ठ ६०]

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बालभारती Science and Technology 2 [English] Standard 10 Maharashtra State Board
पाठ 5 Towards Green Energy
Exercises | Q 15. | पृष्ठ ६०

संबंधित प्रश्‍न

What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?


A solar water heater cannot be used to get hot water on


What is the range of temperature which can be achieved in a box-type solar cooker in two to three hours?


 Name that part of a box-type solar cooler which allow the sun's heat rays to enter the box but does not allow inside heat to go out.


 With the help of a labelled diagram, explain the construction and working of a solar cooker.


Solar cells are made of:

(a) conductors
(b) insulators
(c) semi-conductors
(d) super-conductors


The value of solar constant is:

(a) 1.4 kWh
(b) 1.4 kW/m
(c) 1.4 kW/m2
(d) 1.4 kW/m3


In a solar water heater, why is the storage tank placed at a higher lever than the solar panel containing coils?


In many applications, solar cells are connected to rechargeable batteries. Why is this so?


 What differences would you expect in the charging of car batteries (i) in bright sunlight (ii) on a cloudy day (iii) at night? 


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


Draw a 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.


Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.


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

Find an odd one out.


The potential difference available from a solar cell depends on its area.


Solar energy is a renewable energy. How?


Choose the correct statement.


______ is considered as a great source of energy.


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