Prob.4. A 4-pole, 3-phase, 50 Hz star connected alternator has 60 słots with 2 conductors per slot and two layer type armature winding. Coils are short pitched in such a way that if one coil side lies, in slot number 1, the other lies in slot number 13. Determine useful flux per pole required to generate a line voltage of 6000 volts. Dec. 2016)

Q: A single phase, 2000 V alternator has armature resistance and reactance of 0.8 ohms and 4.94 ohms…

A: Given, A single phase alternator has V= 2000 V  R= 0.8 ohms X= 4.94 ohms I= 100 A Power factor,…

Q: The stator of a 3-phase, 16-pole alternator has 144 slots and there are 4 conductors per slot…

A: Given :No. of phases=3No. of poles, P=16No. of slots, S=144Speed of the alternator, n=375 rpmAir gap…

Magnetic Moment

The magnetic moment is defined as the alignment of a magnet and its strength when the magnet is creating a magnetic field. There are number of examples of the magnetic moment, few are a current carrying conductor in the form of coil, elements at microscopic levels like electrons and many more.