Answer / b. salazar

Motors pull a very high current when they first start. This is due to the induced magnetic field building up to a point where it can begin pushing the rotor away from the stator's magnetic field. This is called locked rotor current. This current should drop off as the rotor begins to spin.

when we change tha taps from 1-16 in 100mva tr whether a constant voltage avaliable till it reaches tap 16 or voltage change as per taps change

1 Answers  

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the 230 value of voltage which is use in our home . is that value is rms, aerage or peack value of voltage?

5 Answers   L&T,

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why is electricity produced and distributed in multiples of 11. 440V, 11KV, 22KV, 132KV etc

2 Answers   Bhel,

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WHY SPEAKER OUTPUT IN WATTS??

2 Answers  

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how to calculate voltage drop in long distance cable? for an e.g lamp of 12 volt ac ,300watt is 90 meter away from supply i.e (x'mer 230 v / 12v)and i m getting 8 volts at lamp terminal ....

1 Answers  

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line and phase voltage relationship?

2 Answers   CPCL, IVRCL,

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what are the problems are there if power factor is leading

3 Answers   NTPC,

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i wanna know that star point in transformer becomes as a neutral on secondary side now tell me that how is that possible?because if joit the all three winding ends with each other it can b short circuited.dut it doesn't.WHY?pls Answer me in brief.thanks alot

1 Answers  

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whata is battery charger ?how many cells connected for 110v?

1 Answers   Essar,

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Q: How to calculate Transformer losses , tell us by Formula.

0 Answers  

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how can we calculate that how much capacitor is needed for a system to increase the pf?

5 Answers  

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one cable insulation resistance 200 mega ohm. how find 250 meter cable resistance.

2 Answers   NTPC,

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