DC Generators
The purpose of providing dummy coils in a generator is

To enhance flux density
To reduce eddy current losses
To amplify voltage
To provide mechanical balance for the rotor

ANSWER DOWNLOAD EXAMIANS APP

DC Generators
While applying Fleming's right-hand rule to and the direction of induced e.m.f., the thumb points towards

Direction of flux
Direction of motion of the conductor if forefinger points in the direction of generated e.m.f.
Direction of induced e.m.f.
Direction of motion of conductor, if forefinger points along the lines of flux

ANSWER DOWNLOAD EXAMIANS APP