For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation

0 Answers  

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WHAT IS THE SHOPE TESTING

2 Answers   TATA,

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If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

0 Answers   Usha Capacitors,

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What is the different between feeder & bus?

3 Answers   IOCL,

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Why line VTG = √3 phase VTG in star? How?

0 Answers   Endurance International Group, Infosys,

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why use celling fan wing is two or three ?

2 Answers  

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armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?

0 Answers   APTransco,

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WHATS THE NEED OF CT INPUTFOR AN VAPM TYPE METERING PT FUSE FAILURE RELAY

1 Answers  

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How i can calculate the cable size for given load,there is any formula,for 3 phase and single phase

2 Answers   Prescient Technologies,

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What happen if we have run 415 V,50Hz designed motor at on 480V,60HZ

8 Answers  

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what is intermediate switch

1 Answers  

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in india why the generating voltage is like 11kv,22kv etc

1 Answers   Alstom, Ford,

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