Answer Posted / raul

yes the exact term is COGGING....which means if the stator
poles and rotor poles are equal or in integral ratio, then
there is a strong alignment b/w the stator n rotor poles
and hence the alignment torque is greater than the starting
torque.....so magnetic locking takes place b/w the stator n
rotor teeth........

If you have an earth with pilecap then your resistance is really low. why and how?

1434

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What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

897

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What is meant by impedance? difference between high & low impedance ?

1563

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What does the term supermesh means?

666

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IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)

1630

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what is settable hystersis protection? If any body knows plz kindly post the answer..

1552

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How many capacitors using in LT panel as per Govt rules?

1499

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A cotter joint is generally used to transmit

798

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how we calculate electrical load on a building according to area?

2259

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Write the programming software name for LG, SIEMENS,Messung,AB

1539

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how to put cable sizing and cable glands size for respective cable & Cable Lug size in a DB sectors???

1651

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What is time invariant system?

683

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How one can check the MAIN of a house wiring ?

1457

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a simple c++ program to calculate simple interst with its data members as private

1389

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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

1716

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