Answer Posted / nimda

If the neutral is intended for single-phase to neutral full
load current then connect a 3-phase reactor with zig-zag
winding or a drive isolation transformer with Dyn winding of
suitable rating.

If the neutral is only for measurement by a meter with high
input impedance then 3 resistors connected as a star can be
used.

What is the test block protection relay if any body know plz explained

1462

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How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

2409

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if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

1402

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If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

2330

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How to maintain ac plant?

1933

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What are your future plans for the company if permanently employed?

2153

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how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.

2749

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what is difference between speed mode and torque mode in motor?? explain in simple words please.

1583

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How halogen & merquery lamp works.

2139

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1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1881

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what is feed back and what are feed back amplifiers?

1056

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1.4 What is meant by CT knee point voltage and how would you determine it

1667

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HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2568

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Why Utility Distribution System in India is mainly at 11 kV? Why not Utility go for 33 kV?

1734

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what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

2318

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