Answer / vasudeva rao

1) power factor is nothing but reactive power control. i.e
if reaactive power requirement is more in the lines then
the angle between active and apparant power changes.
2) other wise simply says cosine angle between voltage and
current

Answer / yash

The pf means suppose the pf of any induction motor is .8
it means that it has the capability of using 80% current of
the total current which reaching to that motor

how does a current carrying conductor posess a magnetic field. what is the reason for the production of electro magnetic field around the conductor

2 Answers   Vizag Steel,

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IN A SMALL D.C GENERATOR, IF WE REPLACE THE LAMINATED CORE ARMATURE WITH A WOODEN BLOCK OF SAME SIZE & SHAPE AND WIND WIRES WOUND ON THE SLOTS OF WOODEN ARMATURE AND CONNECTED TO THE COMMUTATOR.COMMUTATOR IS FITTED WITH BRUSH TO RECEIVE INDUCED E.M.F.WHETHER E.M.F GENERATED OR NOT?

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how to measure the dc current?

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If we says that current is flow only when there is closed path & neutral work as a return path for the same. Then how circuit is closed in three phase as no neutral available ??

1 Answers   Nimbus Harbor Facilities Management,

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how to connect generators in parallel and what are the required equipment to do so?

2 Answers   MSEB,

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i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

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how to estimate the breaker capacity of breaker,please give the one example( 6.6 kv breaker,800a)?????

2 Answers   Divis Laboratories,

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In a star(primary) to delta(secondary) transformer,how you take the neutral point?

3 Answers   HLL,

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3phase motor 400v (induction) A.C 4kw company design 1400rpm but our requirement 2000rpm possible? attached any instrument. reply fast! contact 03343262442

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why the generator operating along with the infinte bus bar should never be under_excited?

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what is the meaning of impedance protected in instrument cooling fan

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What is stepper motor. What is its uses?

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