DC Generators The armature winding of a dc machine is place on the rotor to ______ Save iron Reduce losses Facilitate commutation Reduce armature reaction Save iron Reduce losses Facilitate commutation Reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine is made of ______ Cast steel Wrought iron Silocon steel Soft iron Cast steel Wrought iron Silocon steel Soft iron ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is ______ winding. A closed circuit Partly open circuit and partly closed circuit None of the listed here An open circuit A closed circuit Partly open circuit and partly closed circuit None of the listed here An open circuit ANSWER DOWNLOAD EXAMIANS APP
DC Generators As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately 5 percent 10 percent 40 percent 25 percent 5 percent 10 percent 40 percent 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Carbon lubricates and polishes the commutator Contact resistance is decreased None of the listed here Carbon is cheap Carbon lubricates and polishes the commutator Contact resistance is decreased None of the listed here Carbon is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Generators The brush voltage drop in dc machine is about _______ 0.1 V 2 V 20 V 10 V 0.1 V 2 V 20 V 10 V ANSWER DOWNLOAD EXAMIANS APP
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