how to select a air/vacuum circuit breaker.is there any thumb rule???

1 Answers  

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if you asked to choose a ckt breaker from MCB & MCCB for 32A which one will be best and why??

7 Answers  

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Why the transformers are rated in KVA. ? in new view.

2 Answers  

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

0 Answers  

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what is the difference between current rating and breaking current of an MCCB? and for a known load how to calculate the current rating of a MCCB?

1 Answers   HPL,

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what iz second and fifth hormonics please explain

1 Answers   Satia,

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Explain the difference between verilog task and verilog function?

0 Answers  

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what is the relative size of single and three phase?

0 Answers   Student,

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(1)For 3 No 1500 KVA transformer require on one single bus bar or need to be section through bus coupler means upto 3MVA.(2) 22KV Net work system as ring, How maney I/C required or 0ne I/C and one O/G.(3) What should be rating of VCB for 22 KV line.(4)Electrical/mechanical inter lock, why we need.

0 Answers  

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what maximum load will take a aluminum cable of 50mm 4 core.

3 Answers  

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why in the three pin plug all 3 pins are cutted ?

0 Answers  

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How wti of transformer works?

5 Answers   Vedanta,

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