Answer / abhishek goyal

In CB mostly we have both option AC/DC SUPPLY because of
that we can use diode in circuit.
for spring charge motor we can feed both AC/DC supply (its a
Universal motor)

Answer / girish

In VCB spring charging motor will be a DC one, but control
supply is taken from 230 AC, same will be fed to Diode
bridge and then the rectified 110 Volts DC is fed to the
spring charging motor

difference between diode and scr?

2 Answers  

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why we do occ & scc test in transformer ?how we can do it ?

2 Answers  

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what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..

1 Answers   UPPCL,

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How many earthing pits required for diesel generator set ? Why ?

1 Answers  

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How to determine the Power factor is Leading,Lagging & Unity ?.I don'thave any Meters.

3 Answers  

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how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

0 Answers  

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how much Watt can we fully load a transformer

4 Answers  

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How to choose size of the cable w.r.to current carrying capacity ...

0 Answers   L&T, Saams,

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check list of maintenance of transformer?

11 Answers   ABC, Cosmos, EPRON, Essar, Godrej, Hescom, Infosys, KPTCL, TCS,

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hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.

0 Answers  

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Any body can help me in getting LT panel test procedure.

0 Answers   TATA,

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how dc load convert to ac load

3 Answers   Sunpower Solutions,

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