Define for polyphase circuit (i) Balanced load (ii) Unbalanced load. Draw one example circuit for each type of load.
i) Balanced Load: Balanced three phase load is defined as star or delta connection of three equal impedances having equal real parts and equal imaginary parts.
Example circuit:
ii) Unbalanced Load: When the magnitudes and phase angles of three impedances are differ from each other, then it is called as unbalanced load. OR If a load does not satisfy the condition of balance, then it is called as unbalanced load.
Example circuit: