why there is 1 phase and 3 phase but not 2 phase and 4 phase?

3 Answers  

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If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?

1 Answers   ZCL,

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hi i m going to attend bhel interview on 22nd sep 2008 for ET(electrical engineering).pls guide me how to prepare for the interview.i am a fresher.

1 Answers   Bhel,

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How damper winding in synchronous motor suppress Hunting?

2 Answers   Bhel,

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What is the restart inhabit setting in ABB spam150c relay (Motor protection relay)

0 Answers  

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write down the formula of cable size in RM if current is 50Amp.

0 Answers  

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i purchase a microwave which is 50/60Hz but Current Setting 60Hz in my country we usually use 50hz, can i use AVR to solve my problem?

2 Answers   Samsung,

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what is mean by PID & Principal of working

6 Answers  

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Why we use auxillary relay ? what is function of differential relay, directional o/c relay?

0 Answers   Century Rayon, Mechanical,

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Why not LED burn after showing alarm,as Alarm volt is 11- 13,But LED is of3 volt,why it isnt Burn??

1 Answers  

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what is the resistance value of earthing pit and why they are connected?

6 Answers  

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what is the voltage between earth to neutral in lift.

0 Answers   SIPL,

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