Explanation: Hydroelectric power projects are a significant source of electricity in Maharashtra, a state in western India. These projects harness the energy from flowing water to generate electricity, which is then distributed to various parts of the state, including industries. The Pravara Project and Koyna Project are two such projects that are located within Maharashtra and contribute significantly to the state's power generation.
The Pravara Project is situated on the Pravara River, a tributary of the Godavari River. It is a small-scale hydroelectric project that provides power to the local area and supports the agricultural and industrial needs of the region. The project is managed by the Maharashtra State Electricity Board (MSEB) and has a capacity to generate a substantial amount of electricity.
The Koyna Project, on the other hand, is one of the largest hydroelectric projects in Maharashtra. It is located on the Koyna River, a tributary of the Krishna River. The project consists of several dams and power stations and has a significant capacity to generate electricity. The Koyna Project is managed by the Maharashtra State Electricity Generation Company Limited (MAHAGENCO) and plays a crucial role in meeting the power demands of Maharashtra's industries and residential areas.
In contrast, the Hirakud Project, located in Odisha, is a major multipurpose project on the Mahanadi River. It is not part of Maharashtra's hydroelectric power generation system and does not contribute to the state's power supply. Similarly, the Nagarjuna Sagar project in Andhra Pradesh and the Tungabhadra Project in Karnataka are located outside Maharashtra and do not provide hydroelectricity to industries in the state.
The Ghatprabha Project in Karnataka and the Mettur Project in Tamil Nadu are also located outside Maharashtra and are not part of the state's hydroelectric power generation system. Therefore, they do not contribute to the power supply in Maharashtra.
In summary, the Pravara Project and Koyna Project are the correct options as they are located within Maharashtra and provide hydroelectricity to the state's industries. Understanding the geographical location and the specific contributions of each project is essential to correctly identifying the sources of hydroelectric power in Maharashtra.