DC Generators The yoke of a dc machine carries ______ pole flux. Three times Two times the None of the listed here One-half of Three times Two times the None of the listed here One-half of ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased None of the listed here Carbon lubricates and polishes the commutator Carbon is cheap Contact resistance is decreased None of the listed here Carbon lubricates and polishes the commutator Carbon is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Generators Inter-pole flux should be sufficient to None of these Neutralize the commutating self induced e.m.f. Neutralize the armature reaction flux Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil None of these Neutralize the commutating self induced e.m.f. Neutralize the armature reaction flux Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil 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 4.5% 11.3% 2.8% 9.1% 4.5% 11.3% 2.8% 9.1% ANSWER DOWNLOAD EXAMIANS APP
DC Generators An 8 pole, 250 V, wave wound generator has 400 conductors. If the generator is to be lap wound, the number of conductors required is ______ 3200 800 100 1600 3200 800 100 1600 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Excessive spring pressure All of these Rough commutator bars Abrasion from dust Excessive spring pressure All of these Rough commutator bars Abrasion from dust ANSWER DOWNLOAD EXAMIANS APP
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