Answer / mk

In Three phase supply ,phases are 120 deg appart and act as ref against each other .for single phase application, neutral which is commen point of phases is ref.ref is essential.ground pt is for safety where leakage current if any will pass to gnd.

Answer / naresh

ground wire is where you connect diff equipment to control their potential diff at one level.this applicable to only body parts only. like a generator where engine , alternator , radiator connect with a wire to control their potential generating due to rotetion of generating set.
and eath wire is the wire which connect between body to earth point of earth pit to control potential of equipment.
this point also imp. to human and machine safety

What is meant by celling voltage & current in excitor ?

0 Answers  

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can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)

0 Answers  

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how we can know which is Lv side and HV side of transformer by just seeing it?

7 Answers  

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if HT side voltage is high current is low . and LT side voltage is low current is high please explian.

5 Answers   HP,

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Why we use startor to the motor?

5 Answers   Bhel,

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give me applications of sequence bridges . (used in 3 phase un balanced systems)

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the total iron closs in a transformer core at normal flux density was measured at 25hz and 5ohz and was found to be 250w and 800w respectively.the hysteresis loss at 50hz would be................?????

1 Answers   ABB,

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what are the protection relays for trasformer

3 Answers  

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What will happen if we parallel two transformer with different %impedace?

3 Answers  

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If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

0 Answers  

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what is the difference between multimeter and megger?

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