What is the purpose of the brushes in a DC generator?a.To convert AC output to DCb.To maintain electrical contact with the commutatorc.To supply power to the field windingd.To reverse the direction of current flow in the armature windings
Question
What is the purpose of the brushes in a DC generator?a.To convert AC output to DCb.To maintain electrical contact with the commutatorc.To supply power to the field windingd.To reverse the direction of current flow in the armature windings
Solution
The purpose of the brushes in a DC generator is to maintain electrical contact with the commutator. The brushes, which are typically made of carbon, are in constant contact with the commutator. As the armature (the rotating part of the generator) spins, the brushes pick up the current that's been induced in the armature windings and transfer it to the external circuit. So, the correct answer is b. To maintain electrical contact with the commutator.
Similar Questions
The purpose of commutator in a generator is toa.Reducing arc at the brushesb. Convert DC to ACc.Reduce frictiond.Convert AC to DC
What is the function of the brushes in a DC machine?a.To conduct current to and from the armature windingsb.To provide mechanical support to the rotorc.To control the speed of the machined.To convert mechanical energy to electrical energy
ollect the armature current from the Commutator segments and supply it to the load in case of DC generator*Pole shoeBrushesInterpolesCommutator
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hen the coil passes the brush, its current changes direction. Ideally the current changes ……… in the coil. This ideal situation provides a smooth transfer of current. But due to coil ……… (the current reversal takes some time to take place 18.46 A *Linearly-resistanceNon Linearly- Inductancelinearly- InductanceLinearly- Capacitive
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