Question Bank for Renewable Energy

Page: 02

1. Write a comparison between conventional and non-conventional energy sources. Mention at least five differences between them.
2. Define extraterrestrial radiation and air mass. Describe three components of solar radiation with a suitable diagram.
3. Explain the wind electric conversion system including its block diagram. Also, describe at least two wind energy storage systems.
4. Derive the input power (i.e., wind power) expression for a wind turbine. A wind turbine has a rotor diameter of 120m and operates at a wind speed of 10 m/s. The wind turbine has a rated power output of 3.6 MW at a wind speed of 12 m/s. Calculate the power output of the wind turbine at the current wind speed.
5. Explain the hour angle with a suitable diagram. Calculate the hour angle as well as daylight hours (at sunrise and sunset) on 15^th June and 15^th December for a surface inclined at an angle of 10⁰ and facing towards south. The solar radiation trapping surface is located in Bihar (i.e., 25⁰ 37′ N, 85⁰ 10′ Ε).
6. Discuss four major functions of a thermal-electric conversion system with a proper schematic diagram.