हिंदी

Write a short note on electrical energy generation and environment.

Advertisements
Advertisements

प्रश्न

Write a short note on electrical energy generation and environment. 

टिप्पणी लिखिए
Advertisements

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.
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Towards Green Energy - Exercises [पृष्ठ ६०]

APPEARS IN

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

संबंधित प्रश्न

What type of reflector is used in a box-type solar cooker? 


How much solar energy will be received by 1 m2 area in one hour if the solar constant be 1.4 kW/m2?


Fill in the following blank with suitable word:
A solar cell converts ................ energy into ................ energy.


Explain why, a plane mirror reflector is used in a box-type solar cooker.


 What is a solar cell? Draw the labelled diagram of a solar cell. 


What is solar constant? What is the value of solar constant?


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


Why is the solar cooker box painted black from inside?


Why is the solar cooker box covered with a glass sheet?


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


Name one source of energy which is not derived from solar energy directly of indirectly.


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


Which of the following solar radiations pass through the atmosphere of Earth: X -rays, ultraviolet rays, visible light rays or infrared radiation?


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

Solar reflectors are important, why?


Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×