Emf generated=(flux*no.of parallel poles*no.of conductors*speed)/(60*no.of parallel paths)
therefore, for lap wound.... no.of parallel path=no.of poles and
wave wound ..... no of parallel path=2
Armature reaction is the effect of armature flux on the flux generated by the fied windings.Cross magnetisation and Demagnetising are its consequences.
Armature reaction is effect of armature flux on main field flux. Basically there are two windings in a dc motor - Armature winding (on stator) and field winding (on rotor). When we excite the field winding, it produces a flux which links with the armature. This causes an emf and hence a current in the armature. This current in armature produces another flux which lags the main flux. This is referred to as armature reaction. It has two effects on the machine: 1. Demagnetising effect: It reduces the strength of the main flux. 2. Crossmagnetising effect: Its effect is that it bends/distortes the the main flux line along the conductor
I have homework so I have to write 3 cause and effect for the story "the wounded wolf." Can someone help me please.
compensating winding is used for equal load sharing of two generators running in parallel. while interpole winding is used to minimise the effect of armature reaction by supporting the main field.
the crust
No, it is the capacitors effect upon the motor's winding that starts the fan to turn.
Until we have Tokomak generated Solar Fusion Generated Energy, all transportation will increase air pollution.
over land
Interpoles are similar to the main field poles and located on the yoke between the main field poles. They have windings in series with the armature winding. Interpoles have the function of reducing the armature reaction effect in the commutating zone. They eliminate the need to shift the brush assembly.
demagnetising effect of dc generator is to reduce main field flux there by reduction in generated voltage.
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compensating windings are used to overcome armature reaction