DC Generators The overall efficiency of a dc generator is maximum when its variable loss is equal to Constant loss Mechanical loss Stray loss Iron loss Constant loss Mechanical loss Stray loss Iron loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator the ripples in the direct e.m.f. generated are reduced by Using commutator with large number of segments Using equalizer rings Using conductor of annealed copper Using carbon brushes of superior quality Using commutator with large number of segments Using equalizer rings Using conductor of annealed copper Using carbon brushes of superior quality 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 When two D.C. generators are running in parallel an equalizer bar is used To increase the generated e.m.f. So that the two identical machines will pass approximately equal currents to the load To increase the series flux To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. So that the two identical machines will pass approximately equal currents to the load To increase the series flux To reduce the combined effect of armature reaction of both the machines ANSWER DOWNLOAD EXAMIANS APP
DC Generators In D.C. generators on no-load, the air gap flux distribution in space is Sinusoidal Flat topped Pulsating Triangular Sinusoidal Flat topped Pulsating Triangular ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the value of shunt field resistance of a shunt generator is greater than the critical resistance, the generator will Fail to excite Excite to full voltage None of the listed here Excite to one half of full voltage Fail to excite Excite to full voltage None of the listed here Excite to one half of full voltage ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS