Answer / sunil mehta

In transformer, if we give DC Power to transformer then
very small emf is induced in secondary side as very small
magnetic field generated through DC supply. But if we used
AC supply then we get enough voltage on secondary side
which is our desired quantity.

Answer / abid ali khattak

Because of Meutial.induction.and sign wave frequency
induction.

Answer / victorvgp

Dc transformers are also available in markets

Refernce currents are to be generated using refernce cueernts how can this be done??

0 Answers  

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers  

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why dc motor runs slowly when dc supply is given?

2 Answers   L&T,

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why in some cases the receiving end voltage is higher than the sending end voltage in transmission line (called 'Ferranti effect') ????? whts the reason behind tht???

3 Answers  

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In a generator (Synchronous) does the rotor speed (frequency) corresponds to the speed of the water (in hydro). does the torque on the turbine relate to the flow of water?

2 Answers  

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What is d main advantage of using double circuit 3 phase transmission ?

0 Answers   UHG,

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if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

0 Answers  

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we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.

0 Answers   ABB,

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A 25MVA 3300/400V T/F is termed as per winding is …… a) primary 3300V & Secondary 400V b) primary 3300V & low voltage winding 400V c) High voltage winding 3300V & Secondary 400V d) High voltage winding 3300V & low voltage winding 400V

4 Answers   Engineers India Limited,

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power formula

1 Answers  

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what is the name of oil used in transformer

11 Answers   Energy Pack, Genco,

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What is the difference b/w earthing & grounding?

6 Answers  

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