Answer / jack

E.g. : Solar systems can be sized in 12, 24 or 48 volts.
As a general rule, smaller Photovoltaic systems are run on
12 volts. 24 or 48 volt equipment can handle 4,000 watt
systems. 48 volt systems are designed for energy
consumption needs of over 4,000 watts.

Answer / jack

we can use some power supplies and Electri motors

Answer / shafieque

48V are safe volts for hand hold devices.we can use these
volts in confined space like vessels etc.

what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers   Wartsila,

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Why 66KV is step down to 11KV and then 433v, not directly 66KV to 433v ?

2 Answers  

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From stability point of view,What(higher/lower) should be the value of inertia constant of rotating machines?

1 Answers  

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How we can measure the thickness of bus bar for a given load ? any farmula Plz elaborate clearly.

2 Answers   ITC Infotech, TCS,

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In Which vector group power transformers are mostly manufactured?

1 Answers   MRF,

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WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

0 Answers  

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LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

0 Answers   Himatsingka Seide Ltd,

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why the oscillator doent need the ac voltage??how can it produce the ac voltage by applying the dc voltage only??

2 Answers  

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what is difference between earthingpits,earthing grid & earthing mess?

0 Answers   TATA,

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I want to know the currect formula for industrial lighting lux caluculation & light fittings selection

2 Answers   MRF,

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How does MCB operate without relay..?

10 Answers   Toyota,

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We all have seen transmission and Distribution lines In transmission lines the voltage is high and current is low(to reduce I^2r loss) and in distribution lines voltage is low but current is high however the size of transmission wires is bigger than that of distribution wires even though the amount of current carried by the distribution lines is more than that of transmission lines why?

4 Answers  

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