The ac armature winding of an alternator isA. Always Star connected. B. Always delta connected

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3- A 3-phase, 8-pole, star-connected alternator has 72 slots on the armature. Each slot has 12 conductors and winding is short chorded by 2 slots. Find distributed factor and pitch factor?

What is the basic principle of alternators?

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Write any four advantages of revolving field and stationary armature type alternator.

What will be done to keep the alternator end voltage constant, which changes as the alternator is loaded at different loads? Please explain.

Which of the given circuit breaker can success fully interrupt Lightning Surges? O a. Vacuum CB O b. Air blast CB O c. SF6 CB O d. Oil CB

A three-phase star-connected alternator working at 1400 KVA,50 Hz,2200 V, has an armature dc resistance of 0.18 Ω. Assume the ac resistance is 1.3 times the dc resistance. A field current of 65 A produces a short circuit current of 360 A and for the same field current the open circuit voltage is 1200 V. Determinea} Synchronous reactance of the machineb) Full load regulation at 0.9 laggingc) Power angle

What two factors affect the frequency of an alternator? What is the advantage of taking the output from the stator in a rotating-field alternator? What is an exciter? What is the purpose of the diodes in an automobile alternator? 4