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*EM-II Board exam important questions*
Unit-1
1. Emf equation of alternator
2. Salient pole alternator
3. Cylindrical alternator
4. Principle of alternator Alternator
5. Hydrogen cooling of alternator
Unit-2
1. Armature reaction in alternator for various powerfactor loads
2. Synchronising of two 3 phase alternators by dark lamp method and bright lamp
3. Oc and sc test (or) Synchronous impedance method
4. Synchronising current, power and torque
Unit-3
1. Types of starters used in 3 phase induction motors
2. Slip torque characteristics of induction motor
3. Slip ring induction motor
4. Phasor diagram of 3 phase induction motor
Unit-4
1. Three methods of starting synchronous motor
2. Split phase induction Motor
3. Capacitor start and capacitor run induction motor
4. Speed and torque of a repulsion start induction motor
5. Operation of synchronous motor
Unit-5
1. Various types of enclosures for induction motor
2. Causes for the troubles that occurs in an induction motor
3. How vacuum impregnation is done in winding of induction motors
4. Factors to be considered while selecting the size of cables
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