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

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Which power will flow first if we switch on a motor? Active or Reactive? How?

5 Answers   NPTC,

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Why more sound is produced in mixer than grinder

2 Answers   Vedant,

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if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

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we can run 2phase as 3phase .what will be the differnce with respect to phase angle, power, current between the two modes

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what is the role of frequency in electrical system

2 Answers   Hindalco,

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i am BSEE student, my project study is to synchronize the generator of an hospital, it have a one 313KVA standby-power diesel gen.,and three 100kva transformer.The generator system is operated manually and no ATS or UPS. one more new building is being build so the transformer will be upgrade to a higher vale. 1)how i can connect the new gen. to the old gen. and to the synchronize panel? 2)what is the new gen. to be buy?(rating, etc.) These is my title: To synchronize the generator system of the ____ Hospital. Anyone have a good title? Thanks.

1 Answers  

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why should be the frequency is 50 hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50

3 Answers  

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Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

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specify the inbuilt protections in DG

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While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

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How do performance buccholz relay testing in power transformer

1 Answers  

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