Answer / k.prakashchandra

If you receive supply from network, it is import.If your
excess power is fed to the network, it is export.

for measuring current and etc.,why we use value of 1.732 in three phase calculation. not in single phase.why

3 Answers   Bhel,

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For example, if I use Star delta transformer for distribution, Can I Connect 230 V lighting load bewteen secondary phase & primary neutarl. What will be the effect, if I connect in this manner?

2 Answers  

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What is the transformenr turns ratio.

5 Answers  

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what is units of resistance

3 Answers  

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We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

0 Answers   Siemens,

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explain the working principal of the circuit breaker?

5 Answers  

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Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??

0 Answers  

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why ELCB's are not useful for operation theater equipments ?

4 Answers   Reliance,

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What is the difference between an insulator and a dielectric?

2 Answers  

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Can anybody suggest me about what are all the TECHNICAL CERTIFICATIONS avilable for Electrical Engineers for working people with clear details??

1 Answers  

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What is difference between start imitation and start interlock for 3 phase motor protection ?

0 Answers   Siemens,

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why DC motor body is plain cover but AC motor is different like finse?

2 Answers  

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