DC Generators The armature of a dc machine having 10 poles is rotating at a speed of 10 revolution per second. The number of hysteresis loops formed per second is ______ 50 100 10 150 50 100 10 150 ANSWER DOWNLOAD EXAMIANS APP
DC Generators As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately 25 percent 40 percent 10 percent 5 percent 25 percent 40 percent 10 percent 5 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator External characteristic = magnetization characteristic ohmic drop armature reaction Magnetization characteristic = external characteristic External resistance = internal characteristic armature reaction Internal characteristic = magnetization characteristic ohmic drop External characteristic = magnetization characteristic ohmic drop armature reaction Magnetization characteristic = external characteristic External resistance = internal characteristic armature reaction Internal characteristic = magnetization characteristic ohmic drop ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the flux per pole of dc generator is halved but its speed is doubled, its generated emf will Be halved Remain the same Be doubled Be quadrupled Be halved Remain the same Be doubled Be quadrupled ANSWER DOWNLOAD EXAMIANS APP
DC Generators An exciter for a turbo generator is a Compound generator Separately excited generator Shunt generator Series generator Compound generator Separately excited generator Shunt generator Series generator ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Hard copper Soft copper Carbon All of above Hard copper Soft copper Carbon All of above ANSWER DOWNLOAD EXAMIANS APP
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