How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?

0 Answers  

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What is stray looses?

2 Answers  

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what is the meaning of the parameters labeled on the surge arrestor like 150/20 ???

3 Answers  

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what main difference betwenn invetter & ups & major difference

2 Answers   ABB,

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Why a transformer Noise during its running condition ?

8 Answers   NTPC,

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explain working principle of earth leakage relay

0 Answers   Divis Laboratories, SMIORE,

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what is positive,negative and zero sequence in power system?

4 Answers  

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Which of the following are ill suited for energy efficient motors application?

0 Answers  

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why transformers are put with supply for 24 hours before giving supplying to a locality?

2 Answers  

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How does frequency affect KVA rating of a transformer? If a 500 kva, 400 v, 60 hz t/f is to be operated on 50 hz frequency then how will its KVA rating change? a-increase b-decrease c-remains same Also explain why do u think like that.

8 Answers  

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what is different between buchhoz relay and pressure relife devices in transformer

2 Answers   Spanco,

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what are the problems that generally occur in power flows??

1 Answers  

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