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The ratio of white balls and black balls is 1:2. If 9 gray
balls is added it becomes 2:4:3. Then what is number of
black balls ?
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In case of 3Phase Supply, Voltage R-Earth/Neutral - 220 Y-Earth/Neutral - 220 Z-Earth/Neutral - 220 Total is -> 660Volts Then Why it is said that 3Phase supply is 440
6 Answers Hindustan Unilever Limited,
Why the earth to phase voltage is high 250 compare to other two phases
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