DC Generators If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to increase the field resistance reverse the field connections check armature insulation resistance increase the speed of primemover increase the field resistance reverse the field connections check armature insulation resistance increase the speed of primemover ANSWER DOWNLOAD EXAMIANS APP
DC Generators For the same rating, a dc machine has_______ an ac machines. Less weight than More weight than The same weight as None of the listed here Less weight than More weight than The same weight as None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be High The same as rated voltage Zero Small High The same as rated voltage Zero Small ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is place on the rotor to ______ Facilitate commutation Save iron Reduce losses Reduce armature reaction Facilitate commutation Save iron Reduce losses Reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Generators The O. C. C. of a dc generator is also called its_______ characteristic. No load saturation External Internal Performance No load saturation External Internal Performance ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a _______ generator vary widely with changes in load current. Shunt Series None of the listed here Flat compounded Shunt Series None of the listed here Flat compounded ANSWER DOWNLOAD EXAMIANS APP
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