what is the prinsiple of dc motor and construction and working ,application of dc motor.

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In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

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We store the d.c supply...then why can't we store A.c supply???

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what are the different functions of mccb, rccb / elccb ?

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Why Ac Systems Are Preferred Over Dc Systems?

0 Answers   ABB,

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why and how fault current flows through ground?

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Why is transformer core is earthed

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all types of electrical quations

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I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting

0 Answers   Oman Cables Industry SAOG,

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what is cathodic protaction?

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I need to compare the energy consumption of an industrial machine before and after improving. Shall I compare the apparent power or the active power? I know usually factories use compensated capacitors (or other similar components) to compensate the reactive power, so if I use the apparent power, it's not the real power consumed.

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what you have to see after one week or month from the day of installation of transformer ?

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