Why neutral point is consider as zero potential?

0 Answers   Equate,

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The mechanical angle is electrical angle A always less than B greater than or equal to C equal to D less than or eaual to

1 Answers  

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase, before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

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Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.

1 Answers   ACC,

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where would be tap changer in transformer & why?

2 Answers   Kentz,

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How can we convert dc to equivalent ac??

4 Answers  

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what is transient stability analysis means?

0 Answers  

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explanation of mesh bus bars

0 Answers   Eskom,

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What is the function of pulse transformer?

4 Answers   Electrotherm,

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distribution is maximum done by a)radial b)network c) parallel d)b & c

0 Answers  

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How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

0 Answers   Reliance,

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in our transmisison sub station why we step down firstly 132kv\33kv then 33kv to 11kv. can we direct step down 132kv to 11kv.

2 Answers  

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