Showing posts with label Electrical Q/A. Show all posts
Showing posts with label Electrical Q/A. Show all posts

Why LT motors are delta connected and HT motors are star connected?

Why LT motors are delta connected and HT motors are star connected?There is both reason technical and commercial. 1.     In star, phase current is same as line current. But phase voltage is 1/1.732 times line voltage. So insulation required in case of HT motor is less. 2.     The starting current for motors is 6 to 7 times full load current. So start-up...

Why we can’t store AC in Batteries instead of DC?

Wave form of AC & DC Why we can’t store AC in Batteries instead of DC.or Can we store AC in batteries instead of DC? We cannot store AC in batteries because AC changes their polarity up to 50 (When frequency = 50 Hz) or 60 (When frequency = 60 Hz) times in a second. Therefore the battery...

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