DC Generators The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except Armature reaction Commutation Field weakening due to armature reaction and armature Armature resistance drop Armature reaction Commutation Field weakening due to armature reaction and armature Armature resistance drop ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that It is expensive Shunt field circuit has high resistance Generated voltage is small Terminal voltage drops considerably It is expensive Shunt field circuit has high resistance Generated voltage is small Terminal voltage drops considerably ANSWER DOWNLOAD EXAMIANS APP
DC Generators Current versus time graph for an ideal commutation is a Hydrobola Parabola None of the listed here Straight line Hydrobola Parabola None of the listed here Straight line ANSWER DOWNLOAD EXAMIANS APP
DC Generators The efficiency of a dc generator is maximum when its variable loss is Equal to double the constant loss Equal to half of constant loss None of the listed here Equal to Constant loss Equal to double the constant loss Equal to half of constant loss None of the listed here Equal to Constant loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used To reduce the combined effect of armature reaction of both machines To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To increase the series flux To reduce the combined effect of armature reaction of both machines To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To increase the series flux ANSWER DOWNLOAD EXAMIANS APP
DC Generators The brush voltage drop in dc machine is about _______ 2 V 0.1 V 10 V 20 V 2 V 0.1 V 10 V 20 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS