Answer / mubeen saifi

White colour LED is possible. By combining blue,green and
red colour LEDs in one shell. And by maintaining an optimum
temperature because temperature is responsible for colours
on Kelvin scale.

how to remover corona effect and hysteresis losses from contactor

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Define settling time.

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kindly tell me how the load on generator increase by just increasing the fuel of prime mover, as if for exampple 20 MW gen set is synchronized the load ramps from zero to 20 MW gradully and during this procress only fuel of prime mover increases. Which thing determines the load on generator with respect to fuel

4 Answers   Birla,

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How do you select a cable size(cu and Al) for a particular load

6 Answers   Pepsi,

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Dir sir we have 750 kva Caterpillar dg set we are fas on different problem we start dg set ofter 1 mint apply load around 500a dg was run one or 3 mint after 3 mints dg was shutdown automatic how to face tis problem

3 Answers  

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what is nuetral grounding

2 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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While testing a ZCT what parameters have to check or measure?

0 Answers   Indian Railways,

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in non technical way how can u define POWER FACTOR??

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what is the relation between KVAR,KVA,KW?why we are mentioning capcitor rating in kvar?what is meant by arcing horn and horn gap in transformer?what is equipotential wire?

1 Answers  

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what is current

8 Answers   NTPC,

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when we are going to higher voltage level in substations why we are using Sf6 circuit breakers instead of Vacuum circuit breakers.

3 Answers  

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