lightning arrester rating selection procedure: (line to line voltage(kV)/(squ.root of 3))*squ.root of 2. now the question is, IS this above formula correct for both STAR and DELTA connected system???

1 Answers  

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what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.

0 Answers  

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In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

1 Answers   GE,

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what is vtg limit of earth and neutral at transformer side?

0 Answers   IOCL,

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what is closing resistor in circuit breaker? why it used?

3 Answers  

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what is resistance

6 Answers   AITM,

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what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).

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Does the Impedance of the source affects the THD

1 Answers  

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In a Capacitor the electric charge is stored in:

2 Answers   TELK Transformers And Electricals Kerala Limited,

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star delta starter contorl circuit... drawing..

0 Answers  

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hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

0 Answers   Bhel, CVL,

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Explain different types of d.c motors? Give their applications

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