DC Generators In a D.C. generator Magnetization characteristic = external characteristic External resistance = internal characteristic armature reaction External characteristic = magnetization characteristic ohmic drop armature reaction Internal characteristic = magnetization characteristic ohmic drop Magnetization characteristic = external characteristic External resistance = internal characteristic armature reaction External characteristic = magnetization characteristic ohmic drop armature reaction Internal characteristic = magnetization characteristic ohmic drop ANSWER DOWNLOAD EXAMIANS APP
DC Generators In lap winding, the number of brushes is always Same as the number of poles Half the number of poles Double the number of poles Two Same as the number of poles Half the number of poles Double the number of poles Two ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine is made of ______ Soft iron Wrought iron Cast steel Silocon steel Soft iron Wrought iron Cast steel Silocon steel ANSWER DOWNLOAD EXAMIANS APP
DC Generators The insulating material used between the commutator segments is normally Graphite Mica Paper Insulating varnish Graphite Mica Paper Insulating varnish ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main factor which leads to unstable parallel operation of flat and over compounded generators is their rising voltage characteristics unequal series field resistances unequal number of turns in their series field windings unequal speed regulation of their primemovers their rising voltage characteristics unequal series field resistances unequal number of turns in their series field windings unequal speed regulation of their primemovers ANSWER DOWNLOAD EXAMIANS APP
DC Generators Dc machines which are subjected to abrupt changes of load are provided with Copper brushes Interpole windings Equalisers Compensating windings Copper brushes Interpole windings Equalisers Compensating windings ANSWER DOWNLOAD EXAMIANS APP
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