{"product_id":"9789389750300","title":"Electric Motors for BE VTU  Course 18 OBE \u0026 CBCS (IV- EEE - 18EE44)","description":"\u003cp\u003eModule-1 DC Motors : Classification, Back emf, Torque equation, and significance of back emf, Characteristics of shunt, series \u0026amp; compound motors. Speed control of shunt, series and compound motors. Application of motors. DC motor starters - 3 point and 4 point. Losses and Efficiency - Losses in DC motors, power flow diagram, efficiency, condition for maximum efficiency. (Chapters - 1,2) Module-2 Testing of DC Motors : Direct \u0026amp; indirect methods of testing of DC motors-Brake test, Swinburne’s test, Retardation test, Hopkinson’s test, Field’s test, merits and demerits of tests. Three Phase Induction Motors : Review of concept and generation of rotating magnetic field, Principle of operation, construction, classification and types; squirrel-cage, slip-ring  (No question shall be set from the review portion). Slip, Torque equation, torque-slip characteristic covering motoring, generating and braking regions of operation, Maximum torque, significance of slip. (Chapters - 2,3) Module-3 Performance of Three-Phase Induction Motor : Phasor diagram of induction motor on no-load and on load, equivalent circuit, losses, efficiency, No-load and blocked rotor tests. Performance of the motor from the circle diagram and equivalent circuit. Cogging and crawling. High torque rotors-double cage and deep rotor bars. Equivalent circuit and performance evaluation of double cage induction motor. Induction motor working as induction generator. (Chapter - 4) Module-4 Starting and Speed Control of Three-Phase Induction Motors : Need for starter. Direct on line, Star-Delta and autotransformer starting. Rotor resistance starting. Speed control by voltage, frequency, and rotor resistance methods.  Single-Phase Induction Motor : Double revolving field theory and principle of operation. Construction and operation of split-phase, capacitor start, capacitor run, and shaded pole motors. Comparison of single phase motors and applications. (Chapters - 5,6) Module-5 Synchronous Motor : Principle of operation, phasor diagrams, torque and torque angle, Blondel diagram, effect of change in load, effect of change in excitation, V and inverted V curves. Synchronous condenser, hunting and damping. Methods of starting synchronous motors.  Other Motors : Construction and operation of Universal motor, AC servomotor, Linear induction motor and stepper motors. (Chapter - 7)\u003c\/p\u003e","brand":"Technical Publications","offers":[{"title":"Default Title","offer_id":46992837280036,"sku":"9789389750300","price":236.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/3661\/8788\/files\/9789389750300_2.jpg?v=1694685553","url":"https:\/\/bookstation.in\/products\/9789389750300","provider":"BookStation","version":"1.0","type":"link"}