Answer / k.virat kumar

at a one particular volt in tr. line, hessing noise occurs,
that corresponding volt is called discruptive critical
voltage. volt more than this noise a light glow and ozone
layer is produced called corona loss

Answer / naveen

corna loss generally the ionization of the surrounding air

Answer / srinath

when voltage in tr.line increase about particular level than the air insulation across conductor breaks and the power loss occurs in form of hissing noise and violet glow

what iz second and fifth hormonics please explain

1 Answers   Satia,

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at present how many 765 kv lines are there in india?

5 Answers   Emco,

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in single phase circuit if i connect a heater between phase and neutral, then what will be the current path? phase to neutral or neutral to phase.

4 Answers  

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what is the difference between line & phase current in star delta connection motor?

2 Answers  

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What type of core material is used for metering C.T and protection C.T???

0 Answers   Bhel,

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Why the capcitor to be discharged after put in to operation & why not inductor though the both elements stores energy?

3 Answers  

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what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

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to improve the existing power factor whether capacitors have to be added in series or parallel.and why

3 Answers  

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7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

0 Answers  

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which type of winding is used for high voltage & low current?

1 Answers   GEB,

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What is voltage 

4 Answers  

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Differance between power circuit and control circuit

3 Answers  

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