DC Generators The brush voltage drop in dc machine is about _______ 0.1 V 20 V 2 V 10 V 0.1 V 20 V 2 V 10 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators An exciter for a turbo generator is a Shunt generator Compound generator Series generator Separately excited generator Shunt generator Compound generator Series generator Separately excited generator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Excessive spring pressure Rough commutator bars All of these Abrasion from dust Excessive spring pressure Rough commutator bars All of these Abrasion from dust ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ 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 Carbon lubricates and polishes the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The coupling field between electrical and mechanical systems of a dc machine is ______ Electric field Magnetic field None of the listed here Both electrical and magnetic fields Electric field Magnetic field None of the listed here Both electrical and magnetic fields ANSWER DOWNLOAD EXAMIANS APP
DC Generators The no load voltage of a generator is 240 V and rated load voltage is 220 V. The voltage regulation of the generator is 2.8% 9.1% 11.3% 4.5% 2.8% 9.1% 11.3% 4.5% ANSWER DOWNLOAD EXAMIANS APP
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