What are the two mains divisions of the chordate phylum?

What are the two mains divisions of the chordate phylum?
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Chordates are divided into protochordates (cephalochordates and urochordates) and vertebrates. Life Kingdoms Review - Image Diversity: invertebrates vertebrates
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A shunt d.c. motor works on a.c. mains?

Description : A shunt d.c. motor works on a.c. mains?

Last Answer : A shunt d.c. motor works on a.c. mains unsatisfactorily.

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