Q. What does help in saving sudstantial energy in buildings?

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Q. UK and USA have relatively poor standard of building insulation as compared to

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Q. Incandescent light bulb is about 3% efficient in converting primary energy into

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Q. One-fifth of electricity consumption in USA is used for

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Q. 20 Watt compact 'fluorescent bulb' is equivalent to a 100-W ordinary

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Q. Hospitals, having less premises, can be benefited from an electrical power source about

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Q. In 2010, average global household electricity consumption was approximately:

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Q. In 2000, total installed world capacity of PV increased about:

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Q. By 2010, germany has been given a target of installing :

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Q. An important component of a solar water heater:

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Q. Cost of solar home system ranges from:

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Q. In tropical countries, a solar cooking stove provides an efficient alternative to:

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Q. In 1995, energy of solar arrays being generated:

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Q. Over 20,000 water pumps are powered by:

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Q. In 2010, 'USA' has completed a target of roof top solar system, roundabout:

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Q. In a storage tank, hot water is required for:

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Q. Almost 1.1 million, solar home system and solar lanterns, installed in Asia and

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Q. Back tube of solar water heater is surrounded with a:

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Q. In 1995, Austrian Government had installed:

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Q. 'silicon photovoltaic' solar cell consists of a thin slice of:

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