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प्रश्न
The power produced from solar cells is a DC.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
What type of reactions occurring inside the sun produce solar 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.
Write the uses of solar cells.
What is solar constant? What is the value of solar constant?
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 order to make an efficient solar cooker, the cover of the cooker box should be made of:
If the solar constant is 1.4 kW/m2 then solar energy recived by 1m2area in one hour is:
(a) 5040 J
(b) 504.0 kJ
(c) 5040 kJ
(d) 5.04 kJ
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?
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.
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.
Complete the following flow chart.
Solar energy is a non depleting energy. Justify.
______ is not harmful to the environment.
How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitations overcome?
Observe the figure and label it properly:
- What is the figure related to?
- Why are reflectors used?
- Draw a flow chart showing different stages in such a process.
- How is the process used to generate electricity?
- What other method can be used to generate electricity using the same energy source?
