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The power delivered to a 3-phase load can be measured by the use of 2 wattmeters only when the | |
A. | load is balanced [Wrong Answer] |
B. | load is unbalanced [Wrong Answer] |
C. | 3-phase load is connected to the source through 3-wires [Correct Answer] |
D. | 3-phase load is connected to the source through 4-wires. [Wrong Answer] |