Question

Answer question numbers 3(a) - 3(d) on the basis of your understanding of the
following paragraph and the related studied concepts.
Renewable energy sources such as wind energy are vital for the Indian economy, not only from the point of
view of supply, but also from the perspective of environmental and social benefits. India is the world's fifth largest
wind-power producer and the larges twindmill facilities in India are installed in Tamil Nadu. Muppandal is a small
village of Tamil Nadu and one of the most important sites of wind-farm in the state. It uses wind from the Arabian
Sea to produce renewable energy. The suitability of Muppandal as a sitefor wind farms stems from its
geographical location as it has access to the seasonal monsoon winds. The electrical generators used on wind
turbines in sites like Muppandal, produce anoutput AC of 240 V and a frequency of 50 Hz even when the wind
speed is fluctuating. transformer may be required to increase or decrease the voltage so it is compatible with the
end usage, distribution or transmission voltage, depending on the type of interconnection.
(a) State the principle behind electric generator.
(1)
(b) The output frequency of wind turbine is 50 Hz. What is meant by this statement? (1)
(c) Why do you think Muppandal is at an advantageous position for this project?​

Answer 1

Answer:

3(a) Electric generators work on the principle of electromagnetic induction. A conductor coil (a copper coil tightly wound onto a metal core) is rotated rapidly between the poles of a horseshoe type magnet. ... When the coil rotates, it cuts the magnetic field which lies between the two poles of the magnet.

(B) 50 Hz of frequency of turbine represent the speed of turbine.In other words, it represent speed of rotor. Frequency of turbine is 50 Hz. It means that speed of turbine is 100π rad /sec.It means that turbine rotates 100π radian in one second.