problem 1: Illustrate the differences between salient pole and non salient pole synchronous machine.
problem 2: Derive the emf equation of alternator; describe the coil span factor, distribution factor and derive the expressions?
problem 3: A 3-phase, 8-pole, 750 rpm star – connected alternator has 72 slots on the armature. Each slot has 12 conductors and winding is short chorded by 2 slots. Find out the induced emf between lines, given the flux per pole is 0.06 wb.
problem 4:
a) What are the benefits and drawbacks of using short – pitched winding and distributed winding in alternator?
b) Derive the expression of coil span factor and distribution factor.
problem 5:
a) Describe the constructional details of synchronous machine.
b) Where salient pole rotors are favored.
problem 6: Compute the distribution factor for a 36-slot, 4-pole single layer 3-phase winding.