why Ac current is alternating in nature?(or)why alternating current changes its direction?

3 Answers   APGenco,

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what is the permissible bend in the LT& HT CABLES.

2 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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what is elevation lamp?where its used?

2 Answers   Essar,

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what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?

0 Answers   Faurecia,

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Can 60 Hz transformer be used inplace of 50 hz transfromer?

1 Answers  

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Why is the neutral point of a star connected winding of a motor not grounded?

1 Answers  

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Explain the advantages and disadvantages of thermal power plant?

0 Answers  

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

0 Answers  

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why the earth pin is thicker than other pins in a plug? If it is for reducing resistance, then why the copper earth wire is not so thick as earth pin of socket?

5 Answers   Omax,

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why one pin of plug pin is longer than other two? In some mobile chargers one pin is made not conducting .Why?

4 Answers  

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what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

0 Answers  

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