DC Generators
In dc generator, the constant losses is equal to

Stray losses plus shunt cu loss
Stray losses
Mechanical losses
None of the listed here

ANSWER DOWNLOAD EXAMIANS APP

DC Generators
In a D.C. generator

External resistance = internal characteristic armature reaction
External characteristic = magnetization characteristic ohmic drop armature reaction
Internal characteristic = magnetization characteristic ohmic drop
Magnetization characteristic = external characteristic

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

ANSWER DOWNLOAD EXAMIANS APP