what is the use of spherical metal balls attached on to the earth wire of transmission over head lines?

2 Answers  

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why only dc is given as excitation...why not ac???

2 Answers   TCS,

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How does a 3 phase induction motor is started?

3 Answers   IOCL,

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Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

0 Answers  

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What is big transformer parts and their function ? Ty

0 Answers  

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why ground clearance of EHV line is more than HV line??

2 Answers  

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i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

0 Answers  

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what is the frequency of direct current(dc)?

12 Answers   Cognizant, University,

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What is called grain-oriented laminations?

0 Answers  

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11KV electrical line going through the forest in cloudy night ,how can we find the direction of line.

5 Answers   Bhel, Cesco, HZL, Nesco,

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How much ampere rating on LT side of distribution transformer and also on HT side of 200KVA transformer

2 Answers   ABB,

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If the battery is in charging condition means, battery is which type of load? Capacitive or Resistive load?

2 Answers   Crisp,

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