Explain different types of d.c motors? Give their applications

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Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design

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formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

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if 40 watt bulb has higher resistance then a 100watt bulb then according to joul farmula p=I^2R the 40 watt bulb more power consume then 100 watt bulb.

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What is bandpass of a transformer?

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what is difference between line differential and transformer differential?

0 Answers   L&T,

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Hello everyone, somebody knows what is a "surplice power" ? The hole phrase is: "This rating is appropriate for a generator set paralleled with an infinite bus e.g. a national electrical supply network or grid where the generator set is run at 100% load, 24 hours a day, 365 days a year and any surplice power is exported into the grid" Thanks in advance.

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How to select AC3 duty contactor for DOL & Star-Delta starters

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what is the use of reactive power

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what is Distance protection & how did it work

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What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.

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For a Potential Transformer(PT), the primary neutral terminal must be grounded before energization. Why....? What will be heppend if we energize the PT without grounded the primary neutral point? Why..........?

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