why we used to transmitt the power at higher voltage why not at lower voltage

8 Answers  

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what is reason in mv breaker the control supply voltage is dc not ac?

1 Answers  

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if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1 Answers   BSNL,

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Define ohm’s law for a.c (alternating current)?

0 Answers  

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How can we decide the fualt levels of sub-stations?

2 Answers   Bhel, Enercon, Prakash Industries,

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I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

0 Answers  

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Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technical reason please explain it

2 Answers  

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what happens when we give supply to the secondary of a transformer ?? for example 415v(pri)/110v(sec)

2 Answers  

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what is the function of commutator in dc motor?

52 Answers   Aviation, HP, Raj Construction, TCE, University Exams,

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When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

2 Answers   Sail, TCS,

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the problem faced on star or delta winding connection??

0 Answers  

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how much current does 3ph. 10 hp ac motor draw.

8 Answers  

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