Q6 of 19 Page 143

Pick out the appliances that can conserve electric energy.

Florescent bulbs, copper choke, solar water heater, electric water heater, tungsten bulbs, electronic choke.

Following appliances can conserve electric energy:

● Florescent bulbs


● Solar water heater


● Electronic choke


● When compared to tungsten bulbs, florescent bulbs produce the same amount of light by using lesser energy input. Thus they consume less electrical energy. Similarly, electronic chokes are more energy efficient as compared to copper chokes.


● Solar water heaters make use of solar energy to heat the water. Thus they do not consume electrical energy and hence can be used to conserve electricity.


More from this chapter

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4

Find the odd one out:

i) bioalcohol, green diesel, brothers, petroleum


ii) cholera, typhoid, scabies, dysentery

 5

A non-renewable resource is a natural resource if it is replaced by the natural process at a rate equal to or faster than its rate of consumption by humans.

Read this statement and say whether it is correct or incorrect. If it is incorrect, give the correct statement.

 1

Observe the picture given below and find out what type of energy is produced


i) Identify whether this energy is conventional or non-conventional.


ii) Draw the given diagram and label it with the parts given below:


(battery, battery charger controller, solar incidence, DC load, battery system)


iii) In the given picture, _______energy is transformed into ______energy.

 2

i) What type of energy is produced in this picture?


ii) What difficulties do we face in harnessing this energy? Explain.


iii) Why do we say that this energy is better than solar energy and atomic energy?