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 use of the puls transformer in UPS & how it works???????????

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List out the the types of Mounting Light fixture?

0 Answers   HLL,

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wht factor are considered to design ACB( air Circuit reaker) 415V

3 Answers  

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hoW to select a CT?

4 Answers   BARC,

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Why have to use copper cable for local isolator to motor ?

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in 33/11kv stepdown transfomer, transformer will stepdown to 11kv & remaining 22kv where it will go..

3 Answers  

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

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Iwould like to know barc interview questions

0 Answers   BARC,

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what is direct dischage of power transformer

1 Answers  

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how to calculate the watts from the tr

1 Answers  

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I want formula to calculate cable size as per load given in length & amp. I searched many sites but didn't right answer. Please reply me asap.

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what is the meaning write of AC1,AC2,AC3 .....power contactor

7 Answers   ABB,

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