DC Generators
Which of the following will not prevent a self excited shunt generator from building upto its full voltage?

Wrong direction of rotation
Open field
No residual magnetism
Speed too high

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.
To increase the series flux
So that the two identical machines will pass approximately equal currents to the load
To reduce the combined effect of armature reaction of both the machines

ANSWER DOWNLOAD EXAMIANS APP

DC Generators
When two D.C. series generators are running in parallel, an equalizer bar is used

To increase the speed and hence generated e.m.f.
To reduce the combined effect of armature reaction of both machines
To increase the series flux
So that two similar machines will pass approximately equal currents to the load

ANSWER DOWNLOAD EXAMIANS APP