DC Generators The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be 620 V 580 V 600 V 640 V 620 V 580 V 600 V 640 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 4-pole dc machine has _____ magnetic circuits. 4 6 2 8 4 6 2 8 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The greatest percentage of heat loss in a dc machine is due to ______ Frictional loss Hysteresis loss Eddy current loss Copper loss Frictional loss Hysteresis loss Eddy current loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. More than 20% Less than 0.5 % 2% to 5% 15 to 25% More than 20% Less than 0.5 % 2% to 5% 15 to 25% ANSWER DOWNLOAD EXAMIANS APP
DC Generators The yoke of a dc machine carries ______ pole flux. None of the listed here Two times the One-half of Three times None of the listed here Two times the One-half of Three times 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
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