Advertisements
Advertisements
प्रश्न
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 |
Advertisements
उत्तर
| Forms of Energy | Devices | |
| a. | Electric | Electric Fan, Electric iron |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | Steam Engine, Steam turbine |
| d. | Solar | Solar cooker, Solar heater |
APPEARS IN
संबंधित प्रश्न
What is the range of temperature which can be achieved in a box-type solar cooker in two to three hours?
What is a solar cell? Draw the labelled diagram of a solar cell.
Solar cells are made of:
(a) conductors
(b) insulators
(c) semi-conductors
(d) super-conductors
In many applications, solar cells are connected to rechargeable batteries. Why is this so?
Solar cells are used to provide the electric current to charge the batteries of a car driven by an electric motor. Describe the energy changes which take place.
Name one source of energy which is not derived from solar energy directly of indirectly.
Name two devices which can be utilised for the cooking of food so as to save fuel.
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
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.
A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.
Find an odd one out.
Solar reflectors are important, why?
Give scientific reason.
Hydropower, solar energy and wind energy are called renewable energy.
Complete the following flow chart.
Complete the table.
| Limitations of Solar energy | Limitations of Wind energy |
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Kamuthi solar power project is situated in ______ district in Tamil Nadu.
