DC Generators The main drawback of a dc shunt generator is that It is expensive Terminal voltage drops considerably Generated voltage is small Shunt field circuit has high resistance It is expensive Terminal voltage drops considerably Generated voltage is small Shunt field circuit has high resistance ANSWER DOWNLOAD EXAMIANS APP
DC Generators _____ together are called stray losses. Iron and friction losses Copper and iron losses Field copper loss and iron loss Frictional loss and copper loss Iron and friction losses Copper and iron losses Field copper loss and iron loss Frictional loss and copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of brushes in a commutator depends on Voltage Amount of current to be collected Speed of armature Type of winding Voltage Amount of current to be collected Speed of armature Type of winding ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here Contact resistance is decreased Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Stray losses consist of Magnetic and copper losses Magnetic and mechanical losses None of the listed here Mechanical and copper losses Magnetic and copper losses Magnetic and mechanical losses None of the listed here Mechanical and copper losses 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 reduce the combined effect of armature reaction of both machines To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To increase the series flux To reduce the combined effect of armature reaction of both machines To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
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