Assertion: commutator | /r/CapableOf | reverse the current
Facets:
value: in every half
type: TEMPORAL
value: periodically
type: TEMPORAL
Source sentences:
text: At certain periods during the DC motor rotation, the commutator must reverse the current, causing reduced motor life due to arcing and friction.
text: A commutator is an electrical switch that periodically reverses the current in an electric motor or electrical generator.
text: At certain times during the rotation of a DC motor, the commutator must reverse the current.
text: So the commutator reverses the current in every half turn producing a steady torque and the armature coil rotates in a single direction.