ANSWERS: 1
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YES.IT WILL DEFINITELY SAVE POWER CONSUMPTION BUT BEFORE CHANGING TO STAR CHECK WHETHER THE STARTING CONDITIONS PERMIT IT.TO OBTAIN POWER SAVING RUN THE MOTOR IN DETA FOR CERTAIN PERIOD OF TIME. NOTE DOWN THE CURRENT DRAWN.THEN RUN THE SAME IN STAR FOR THE SAME PERIOD.NOTE THE CURRENT DRAWN.CALCULATE THE POWER DRAWN USING POWER EQUATIONS FOR DELTA AND STAR CONNECTIONS;THE DIFFERENCE WILL GIVE THE POWER SAVED FOR THAT PARTICULAR TME OF RUN.HERE VOLTAGE AND THE POWER FACTORS ARE ASSUMED CONSTANT FOR THE PERIOD OF TEST RUN.
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