DC Generators If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be High Small Zero The same as rated voltage High Small Zero The same as rated voltage ANSWER DOWNLOAD EXAMIANS APP
DC Generators The physical size of 100 kW, 2000 rpm generator is _____ that of 10 kW, 200 rpm generator. Less than About the same as None of the listed here More than Less than About the same as None of the listed here More than ANSWER DOWNLOAD EXAMIANS APP
DC Generators The O. C. C. of a dc generator is also called its_______ characteristic. Performance Internal No load saturation External Performance Internal No load saturation External ANSWER DOWNLOAD EXAMIANS APP
DC Generators The coupling field between electrical and mechanical systems of a dc machine is ______ None of the listed here Magnetic field Both electrical and magnetic fields Electric field None of the listed here Magnetic field Both electrical and magnetic fields Electric field ANSWER DOWNLOAD EXAMIANS APP
DC Generators The no load voltage of a generator is 240 V and rated load voltage is 220 V. The voltage regulation of the generator is 4.5% 2.8% 9.1% 11.3% 4.5% 2.8% 9.1% 11.3% ANSWER DOWNLOAD EXAMIANS APP
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 speed of primemover increase the field resistance check armature insulation resistance reverse the field connections increase the speed of primemover increase the field resistance check armature insulation resistance reverse the field connections ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS