Question

i)With the aid of a block diagram expalin the how a mini solar plnat can be connected to the National grid, explaining all the gadgets/equipment needed and their fucntion.

ii)Breifly expalin the factors to be conisidered in installation of a a)wind generator b)solar power plant c) Thermal power plant

iii) expalin in detail the healt hazards and other factors to be taken into consideration before the insatallation of a nuclear power plant

Answer 1

(i) A solar plant can be connected to the National grid using a mini-grid as shown below.

For its proper functioning, some requirements are

• There should be good energy storage facilities.
• An inverter for converting dc into ac.
• A transformer for changing voltages as required

[ii](a) These factors should be considered while installing a wind power generator

• The place should have good wind flow. (too less or too much wind decreases the efficiency)
• Is and is there enough demand for the power in that particular region?
• What size of the wind turbine will be optimal? (It depends upon wind flow of the region).

(b.)

• Geographical location (more sunny days, more energy)
• Optimal angle of the solar panel

(c.)

1. The location of the plant should be away from

• Metropolitan cities, national park and wildlife sanctuaries.

• Ecologically sensitive areas like a tropical forest, biosphere reserve, important lake and coastal areas rich in coral formation

2.

The sites should be chosen in such a way that chimneys of the power plants do not fall within the approach funnel of the runway of the nearest airport;

[iii]

• Nuclear plants are a great threat to our health due to their radiations. Exposure to radiation has associated health risks. As we are always exposed to radiation, this risk can only be minimized but not entirely eliminated. Through use of nuclear reactors for power as well as research, the quantity of radioactive materials requiring control have greatly increased. Very strict radiation protection standards should be maintained to keep the risks under control.
• There should be a proper way for waste management and disposal.
• The plant site should be away from populated areas.