DC Generators The O. C. C. of a dc generator is also called its_______ characteristic. External No load saturation Performance Internal External No load saturation Performance Internal ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ 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 Carbon is cheap 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 ______ 800 100 3200 1600 800 100 3200 1600 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature core of a D.C. generator is usually made of Nonferrous material Silicon steel Cast-iron Copper Nonferrous material Silicon steel Cast-iron Copper ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Carbon Soft copper Hard copper All of above Carbon Soft copper Hard copper All of above ANSWER DOWNLOAD EXAMIANS APP
DC Generators The physical size of 100 kW, 2000 rpm generator is _____ that of 10 kW, 200 rpm generator. More than None of the listed here Less than About the same as More than None of the listed here Less than About the same as ANSWER DOWNLOAD EXAMIANS APP
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