Question

name the two systems used for distributing power in a house or factory

Answer 1

eletrical power is distribution either three wires or four wires (3 wire for phases and 1 wire for Neutral). Voltage between phase to phase called Line Voltage and voltage between phase and neutral is called Phase Voltage.

Types of electrical power distribution systems
This forth wire may or may not be distributed in distribution system and same way this neutral may or may not be earthed. Depending of this neutral condition (earthed-not earthed-access-not access) there are various type of earthing systems. The neutral may be directly connected to earth or connected through a resistor or a reactor. This system is called Directly earthed or Earthed system.

Answer 2

here is u r answer...........