80) The function of brushes in the DC generators

convert AC into uni-directional current

collect the current from the commutator

increase the magnetic flux

connect the armature and commutator

Answer is:

collect the current from the commutator

poles

armature coils

parallel path

brushes

Answer is:

increase the flux around the conductor

decrease the flux around the conductor

rotate the magnetic field over the conductor

set the pole and armature to touch each other

Answer is:

The armature core is not properly laminated

The generator is kept idle for a long time

The armature resistance is more than 1 ohm

Incorrect brush position

Answer is:

inserting compensating winding

providing inter poles between the main pole

shifting the brush position from GNA to MNA

increasing the ampere - turns in the field winding

Answer is: