DC Generators In a four-pole D.C. machine All the four poles are north poles Two north poles follow two south poles All the four poles are south poles Alternate poles are north and south All the four poles are north poles Two north poles follow two south poles All the four poles are south poles Alternate poles are north and south ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator Internal characteristic = magnetization characteristic ohmic drop External resistance = internal characteristic armature reaction External characteristic = magnetization characteristic ohmic drop armature reaction Magnetization characteristic = external characteristic Internal characteristic = magnetization characteristic ohmic drop External resistance = internal characteristic armature reaction External characteristic = magnetization characteristic ohmic drop armature reaction Magnetization characteristic = external characteristic ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Carbon lubricates and polishes the commutator None of the listed here Carbon is cheap Contact resistance is decreased Carbon lubricates and polishes the commutator None of the listed here Carbon is cheap Contact resistance is decreased ANSWER DOWNLOAD EXAMIANS APP
DC Generators The ideal commutation in a coil is not possible because each coil has None of the listed here Resistance Capacitance Inductance None of the listed here Resistance Capacitance Inductance ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used To increase the series flux To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines So that two similar machines will pass approximately equal currents to the load To increase the series flux To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines So that two similar machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
DC Generators In dc generator, the constant losses is equal to None of the listed here Mechanical losses Stray losses Stray losses plus shunt cu loss None of the listed here Mechanical losses Stray losses Stray losses plus shunt cu loss ANSWER DOWNLOAD EXAMIANS APP
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