Answer / aniket

three phase supply is used
1.to for higher load
2. more than 3 phase ie 6 phase make alternator complex and
losses in alternator increses,more copper is required.

Answer / piyush chaturvedi

Three phase balance supply system is the best suited system considering 3 phase loads as well as 3rd Harmonics in generator windings. A star connected load at generation end makes power free from 3rd harmonic whereas 3 phase balance supply makes system more reliable.

Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

0 Answers   WCC,

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is it possible to have dc motors on single chip

0 Answers  

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How open delta used for protection?

4 Answers  

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Where we use 30mA , 100mA & 300mA RCCB ?

3 Answers   BEL,

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What is the name of powder which is used in inner side of a cable? and purpose?

1 Answers  

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There are two nos of 33Kv/11Kv 5MVA transformers conecting through HT cable from substation having metering at substation itself.One transformer used at a time another remains stand by.Further 11 nos of 11Kv/440V transformers are attached on it and each transformer is having its own Power factor correction panel.Now one 33/11Kv transformer at no load condition/Stand by condition is having power factor in leading side upto 0.21 and while when another tranformer at same situation have power factor in lagging 0.42. Now one thing is clear that transformer one is having 1.5 Km long 33kv cable due to that PF goes in leading side and another is having only 250 mtr length remains him lagging. Now i want to know that how i can maintain the Power factor at no load/ stand by position though both are behaving in seperate manner.

1 Answers  

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WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC

0 Answers  

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could anyone suggest project title

1 Answers   Engineering,

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what is the need of reactor in between the transmission line?..like powergrid like that..

5 Answers   Delta Roto Tech,

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area control error

0 Answers  

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What are the effects of armature reaction on a DC machine and discuss the various methods to reduce the effect.

1 Answers  

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What is the difference between Generator Differential Relay and Transformer Differential Relay?

0 Answers  

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