DC Generators Carbon brushes are used in a dc machine because _______ Carbon is cheap Carbon lubricates and polishes the commutator None of the listed here Contact resistance is decreased Carbon is cheap Carbon lubricates and polishes the commutator None of the listed here Contact resistance is decreased ANSWER DOWNLOAD EXAMIANS APP
DC Generators The dc generator that has poorest voltage is Flat compounded generator Over compounded generator Series generator Shunt generator Flat compounded generator Over compounded generator Series generator Shunt generator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The O. C. C. of a dc generator is also called its_______ characteristic. Internal Performance No load saturation External Internal Performance No load saturation External 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 ______ 800 3200 1600 100 800 3200 1600 100 ANSWER DOWNLOAD EXAMIANS APP
DC Generators _____ together are called stray losses. Frictional loss and copper loss Copper and iron losses Field copper loss and iron loss Iron and friction losses Frictional loss and copper loss Copper and iron losses Field copper loss and iron loss Iron and friction losses ANSWER DOWNLOAD EXAMIANS APP
DC Generators Wave winding is composed of That even number which is exact multiple of poles That even number which is exact multiple of poles + 2 Any even number of conductors Any odd number of conductors That even number which is exact multiple of poles That even number which is exact multiple of poles + 2 Any even number of conductors Any odd number of conductors ANSWER DOWNLOAD EXAMIANS APP
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