EASY
Earn 100

List a few advantages of solar power.

Important Questions on Energy Production

MEDIUM

Consider the following statements and choose the correct alternative.

Statement - I : Heating capacity of biogas is more than that of biomass.

Statement - II : Biogas produces lesser pollution as compared to biomass.

MEDIUM
List any three advantages and disadvantages of solar energy. 
HARD
The solar constant at a place is 1.4 kw/m2. The solar energy received by an area of 4 m2 per second at this place is: 
EASY
Solar energy is treated as the energy source of the future. Write any two solar devices working on solar energy that can be utilised in daily life.
MEDIUM
Name the major constituent of biogas. Write the properties of biogas which make it a good fuel.
MEDIUM

Give an example of non-conventional energy with the help of which electricity can be generated.

MEDIUM
Explain the working of a solar water heater with the help of a labelled diagram.
MEDIUM
Name the two devices that work using heat energy of the sun.
MEDIUM

Match the suitable renewable and non-renewable resources.

Sources    A  B      C
Renewable Coal Wind  Petroleum
Non-renewable Hydrogen Natural gas Solar energy
MEDIUM

Correct statement, if it is wrong.

India is called the 'country of winds'.

EASY
Why is it not possible to use solar cells to meet our energy needs? State three reason to support to your answer.
MEDIUM
During which seasons a solar cooker can not be used?
HARD

A diagram of OTEC (Ocean Thermal Energy Conversion) system is given below. In which part water is converted into water vapours?  

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HARD
Distinguish between a solar panel and a photovoltaic cell.
EASY

Write the quadrants in which the following points lie:

-4,7

EASY
What is the energy transformation that takes place in a solar cell?
HARD

Sunlight of intensity of 700 Wm-2 is captured with 70% efficiency by a solar panel, which then sends the captured energy into a house with 50%efficiency. a. The house loses thermal energy through bad insulation at a rate of 3.0 kW. Find the area of the solar panel needed in order to keep the temperature of the house constant. 

MEDIUM

The graph shows the variation with the incident solar intensity I of the temperature of a solar panel used to heat water. Thermal energy is extracted at a rate of 320 W . The area of the panel is  2.0 m2. Calculate, for a solar intensity of 400 W/m2, the temperature of the water,

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MEDIUM

What are the advantages and limitations of solar energy?