Exams

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. 

The Tank irrigation is more in the rocky plateau area of the county, where the rainfall is uneven and highly seasonal. The Eastern Madhya Pradesh, Chhattisgarh, Orissa, Interiors of Tamil Nadu and some parts of Andhra Pradesh have more land under tank irrigation.Well Irrigation is common in alluvial plains of the country except the deserts of Rajasthan. Plains of UP, Bihar, Gujarat, Karnataka & Tamil Nadu are the states which are more prominently under the well irrigation.These areas have huge groundwater reserves.

Well irrigation is much older than tank irrigation in India.

The contents of the Mahavamsa can be broadly divided into four categories:

The Buddha's Visits to Ceylon: This material recounts three legendary visits by the Buddha to the island of Ceylon.

Chronicles of Kings of Ceylon: This material consists of genealogies and lineages of kings of Ceylon, sometimes with stories about their succession or notable incidents in their reigns

History of the Buddhist Sangha: This section of the Mahavamsa deals with the mission sent by Emperor Ashoka to Ceylon, the transplantation of the bodhi tree, and the founding of the Mahavihara. It includes the names of prominent monks and nuns in the early Sri Lankan sangha. It also includes accounts of the early Buddhist councils and the first recording of the Pali canon in writing.

Chronicles of Ceylon: This material begins with the immigration of King Vijaya from India with his retinue and continues until the reign of King Mahasena, recounting wars, succession disputes, building of stupas and reliquaries, and other notable incidents.

All the words in the sentence are correct and require no changes. Hence, the correct answer is option 5.