DC Generators The coupling field between electrical and mechanical systems of a dc machine is ______ Both electrical and magnetic fields Magnetic field None of the listed here Electric field Both electrical and magnetic fields Magnetic field None of the listed here Electric field ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that Terminal voltage drops considerably Shunt field circuit has high resistance It is expensive Generated voltage is small Terminal voltage drops considerably Shunt field circuit has high resistance It is expensive Generated voltage is small ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ 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 Carbon lubricates and polishes the commutator None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The ideal commutation in a coil is not possible because each coil has Inductance None of the listed here Resistance Capacitance Inductance None of the listed here Resistance Capacitance ANSWER DOWNLOAD EXAMIANS APP
DC Generators ______ dc machine are most common. 6 pole 4 pole 2 pole 8 pole 6 pole 4 pole 2 pole 8 pole ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature reaction in a dc generator can be increased by increasing the Armature current Data is insufficient None of the listed here Field current Armature current Data is insufficient None of the listed here Field current ANSWER DOWNLOAD EXAMIANS APP
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