About: http://webisa.webdatacommons.org/394350836

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In case of a motor having a small capacity, in particular, there is a problem that the large number of power elements of the control unit of the motor makes the motor expensive comparing with the case of driving a DC motor.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com