Answer / pinky

i think heat losses depends on impedance.

Answer / lalitha

imp Z= R+JX and T is direstly proportional to R...therefore
heat losses increase with imp

Answer / guest

Here heat losses
only consists of
Cu losses...and
it can be
denoted as
I2R....Cu losses
does not depends
on
frequency....so
heat losses will
vary only due to
change in
resistance..not
impedance...if
it is core
(iron) losses
then they r
definately
depends on
impedance Z...

Answer / nithi

Heat losses occur in resistance (real component) only ,not
in reactance(imaginary component).but heat losses depend on
the value of current flowing through the circuit (i.e.
I2).Meanwhile,current is decided by the impedance value
(reactance & resistance ). So,ultimately heat loss depends
on the impedance not only on resistance.

in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com

0 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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Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

0 Answers  

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On what basis do you decide the ONAN (Oil Natural air natural) or Dry type transformer for a project?

0 Answers   Semac,

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why only 26v dc is used in aircraft and 115v ac in aircraft.

0 Answers   Jet Airways,

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We are getting supply at33kvand it stepdown to 11kv.So Our requirement is 11kv voltage.why we draw 33kv from the grid instead of 11kv?

2 Answers   Birla,

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1 Answers  

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MCB MCCB ACB VCB

1 Answers  

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why different series of vfds (like allenbradley)are used in industry ?

0 Answers  

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what is the diff between mcb and vcb

3 Answers  

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