Answer Posted / n

220 Multiply by root three is equal to 281.4 volts. for 440
volts single phase voltage up to 254 volts.

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

1697

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Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?

1207

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What is the tests required for a 132 kV, 400 kV , 765 kV for a Circuit Breaker and Power Transformer before commissioning ?

1657

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What are the advantages and disadvantages of short-pitched winding?

1137

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what is the Connected Load (kW) or Contract Demand (kVA)of mahindra nasik plant??

9558

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how much allowable resistance that can be difference in motor all coils?

2411

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How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

2204

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what is earthing transformer? draw the winding dia.of earthing transformer.

1765

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can some one clearly explain why -48 volt DC use in telecom site????

1747

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Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?

1207

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how to calculate maximum current

2384

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What is electrical grounding?

1256

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ow can i get certificate of competency as electrical supervisor and my diploma in electrical engineering from jalgaon.

2415

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What is the actual calculation for transformer short circuit test?.

2514

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list the advantages of RCCB over other circuit breakers?

1754

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