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

0 Answers  

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what is the cause of voltage dipp or swell in the transmission lines?

0 Answers  

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we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

0 Answers   RYK Mills,

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does magnetic interlocking take place in an induction motor ?

2 Answers  

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what convarts RRA in alternator ,AC to DC or DC to AC,

1 Answers   Birla,

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what is battery impedance testing and how we perform this test with four wires.

1 Answers   Etimaad, MRF,

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Why the CT Secondary is rated as 5A generally?

2 Answers  

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Explain What will happen when direction of field current is changed (i.e, field excitation is reversed) in the following machines? 1) Alternator 2) Synchronous Motor 3) D.C Generator ( Shunt or Seies ) 4) D.C Motor ( Shunt or Seies )

3 Answers   NTPC, Transco,

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WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT DIFFERENT VOLTAGES.

0 Answers  

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what is use of mccb.

1 Answers   Simplex,

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what are trouble functions of transformer?ex. prv trip,oltc,oti,wti.explain detail.

1 Answers  

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Why the electron flow in reverse of current.

6 Answers  

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