Answer / shyamkr

according to formula:
F=q(v*B)
where v is velocity vector and B is the magnetic field
vector ,q is negative in case of electron .but as electron
is static the force is zero.
but electron will produce its own electric field so the
direction of motion is given by
v=E*B.

What are the rating wise protections required for Generators from 600KVA to 2000KVA

3 Answers  

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when ur using single phase type of load for a 3.5core power cable .Why neutral is .5 and how much current in the neutral if we consider neutral as a reverse path for three phases.

2 Answers  

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What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?

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1 Answers  

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0 Answers  

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Dear Friends, I have a 500KVA transformer supplying whole factory having 3 phase and single phase mixed loads. Power room has ammeters connected via CTs for individual phase. Now I know that readings shown on meter for each phase say R,Y and B are line currents. But when I want to know the total on transformer do I need to add the currents of all three phases readings shown on meter or value for anyone phase will give me the correct power load on transformer for that point of time. 2. If ammeter shows unbalanced readings for R,Y, B phases say 150, 250 and 300 respectively so can I assume that 150A i.e average of 3 will be the 3phase load currents and remaining will be 1phase currents. Please clarify my doubt.

4 Answers  

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how much leakage current is allowed in MC61A L&T make relay?

0 Answers   Siemens,

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why dc supply is given for excitation of ac alternator?how dc can produce flux?

5 Answers  

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2 Answers   Thermax,

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