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.

what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?

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Write down the brushes of a de machine.

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1.4 What is meant by CT knee point voltage and how would you determine it

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an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 Answers  

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tell me exact relation b/n voltage and current and which one is depend other

7 Answers   HAL,

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what is parellel power factor correction?

2 Answers   HCL,

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howmuch current can carry the 2.5Sqmm copper cable?

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Do closed loops systems require manual input?

0 Answers   Ericsson,

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According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

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how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc

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hr round

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what do you mean by star point.its importance in ct & pt

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