Answer / prajeesh

In a star connected 4 wired system the neutral must be grounded to neutralize the unbalaced current in that circuit. If the load is balanced the star point must be work as neutral.

Answer / ajayiet

it do not matter in case of
balanced supply but in
unbalanced supply it is of
great significance

which of the following motors is non-self starting?

3 Answers   SS Solutions,

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What is resistance reading of earth copper rod with grid and without grid?

0 Answers  

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what is max. continous current of LT side of distribtion transformers? ie for25kVA, 63kVA, 100kVA, 200kVA etc

2 Answers  

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WHICH TYPE OF TRANSFORMER IS USED IN POWER TRANSMISSION BASED ON TRANSFORMER CONNECTION ON PRIMARY AND SECONDARY SIDE

3 Answers  

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why excitor coil of an alternator can fail

3 Answers  

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what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com

0 Answers   Bhel, CFL,

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What difference between voltage and current

5 Answers  

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Dear sir, we are getting voltage fluctuations suddenly for 2 or 3 minutes again it becomes normal. we checked each and every connection some times we are getting 110 volts like that from earth to neutral again it is reducing we are getting supply from 45 kva DG set give earthing properly.

3 Answers   Triveni,

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how fluoresent lamp works??

2 Answers  

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1 sq mm conductor=? how many amps

3 Answers  

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7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

0 Answers  

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which book to refer in electrical engineering for iocl exam & which book for general english.

0 Answers   L&T,

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