Answer / senthil

Cb beakers selected depending upon the load current. 16amps,24amps
etc like this cb are available in market.cv will trip(cut off the supply) the
load circuit when short circuit or over current flow occurs.

why is efficiency of transformer more than that of other rotating machines?

1 Answers  

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Hello, I am just preparing my self for a university interview and struck on the 11kv ring main unit system network. I just know that ring main unit has total three breakers, fuses and use to supply a power to any load/ building without any interrupt. But i am not be able to visualize the connections, either Ring main unit getting power from two different power sources? or there is always one feeder in complete ring circuit??? I would be highly thanks full of you help me.

1 Answers  

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What happened when the field winding of dc series motor is open?

2 Answers   Bhel,

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what is the solution for meger test failed the MV cable?

1 Answers  

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Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

0 Answers   Bhel,

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In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume that R1-R2, Y1-Y2, B1-B2 are the 3 windings on the HV side.

3 Answers  

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WHAT SHOULD BE THE RATING OF generator required to run a pump motor of 45 Kw.

1 Answers   Jauss Polymers,

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how can we calculate cable size

1 Answers  

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what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?

0 Answers  

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

0 Answers  

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What are the different types of transformers?

0 Answers   Syntel, Visa,

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what relation between transmission line & communication line?

1 Answers   NTPC,

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