Brief coverage of fractional horsepower motors and other specialized machines. Key Learning Features
The author explains the different types of DC machines, such as DC motors, DC generators, and DC converters. He also discusses the various methods of speed control, such as armature voltage control, field current control, and power electronic control.
The author uses mathematical models to analyze the behavior of electrical machines, including the calculation of machine parameters, such as inductance, capacitance, and resistance. He also discusses the various methods of analysis, such as phasor analysis, complex analysis, and state-space analysis.
The book is structured to align closely with standard university curricula in India and other commonwealth countries. End-of-chapter summaries, review questions, and multiple-choice questions make revision efficient. Students preparing for competitive exams (like GATE, IES, or state engineering exams) find the short-answer questions and objective-type problems particularly useful. vk mehta electrical machines
Special machines, such as stepper motors, servo motors, and brushless DC motors, are widely used in applications such as robotics, CNC machines, and automotive systems. V.K. Mehta's book provides a comprehensive coverage of special machines, including their construction, working principles, and applications.
Detailed study of three-phase and single-phase induction motors, including starting and speed control methods.
No textbook is without its limitations, and Mehta’s work is no exception. The book deliberately avoids deep field analysis (e.g., Maxwell’s stress tensor or detailed magnetic circuit modeling) and advanced control aspects (e.g., vector control of induction motors or modern power electronics integration). For postgraduate or research-level study, this text must be supplemented with more rigorous references. Additionally, some derivations are simplified to the point of omitting certain boundary conditions, which purists may find lacking. Brief coverage of fractional horsepower motors and other
The book systematically covers the entire spectrum of conventional electrical machines. It begins with the essential physics of magnetism and electromagnetism, establishing a solid base for what follows. The core chapters are logically divided into:
For example, the analysis of a DC motor can be represented by the following equation:
Electrical machines are an integral part of modern power systems, converting electrical energy into mechanical energy or vice versa. The study of electrical machines is crucial for electrical engineers, as they are used in a wide range of applications, from small household appliances to large industrial drives. V.K. Mehta's book on electrical machines provides a comprehensive coverage of the subject, making it a go-to resource for students and professionals alike. The author uses mathematical models to analyze the
V.K. Mehta's book covers a wide range of electrical machines, including DC machines, AC machines, transformers, and special machines. The author provides a detailed analysis of the construction, working principles, and applications of each machine type, making it easier for readers to understand the subject.
The textbook is designed to introduce students to the "workhorses" of the modern world: devices that convert energy through magnetic fields. It is structured into 14 comprehensive chapters that cover the following key areas: