Answer / k.d. pathak

when transmission line is lightly loaded than receving end voltage is become higher than the sending end voltage hence line taking more charging current in order to flow of reactive power which is depnd on the voltage level . as reactive power flows from higher voltage to lower voltage
this is called ferranti effect

explain why tap changer is always connected to high voltage winding side of the transformer.

10 Answers   IOCL, UPPCL,

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Why should not we run the IM in low voltage, if runs means what will happen?(for example instead of 400V we give 250V supply)

2 Answers  

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What is the better way of passing 400 amp from sending end to receiving end ? By overhead line or underground cable and why ? if underground cable then how much depth require ?

1 Answers   Aditya Birla, HCL,

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why power generated only 11KV not more than???????? and why power up/down is multification of 11*?=??.??? foe Example 11/33,11/66,66/11KV etc,

8 Answers   Essar,

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Why we use Carbon & graphite mixxed brushes in the DC motor?

6 Answers  

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What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?

6 Answers  

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What is the difference between isolators and electrical circuit breakers? What is bus-bar?

0 Answers  

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a 120 60 watt incandescent lamp has to be operated from 50 c/sec 1 phase ac supply. in order to do this a circuit element has to be connect in series with the lamp. which one of the following sries element is preferable.

1 Answers   SSC,

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is the power of a single phase induction motor(Fans) is constant under varying speeds?

4 Answers  

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What is application of isolation transformer & How it works.

2 Answers   BARC,

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What is the formula of frequency ?

0 Answers  

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Which modulation has higher data rates a.fm b.am c.qam d.qpsk

1 Answers   NTDC,

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