Answer / yuvi

The colour of an LED is determined by the semiconductor
material used in it

Answer / ragu

THE FACTORS DEPEND UPON THE WAVE LENGTH OR FREQUENCY OF THE
LIGHT EMITTED. IT IS BASICALLY DEPENDS UPON THE CHARGE THAT
IS DISCHARGE DURING THE JUMPING OF ELECTRONS FROM HIGHER
ENERGY LEVEL TO LOWER ENERGY LEVEL..

Answer / kaparapu sreekanth

colour of LED depends on frequency,so colour of light varies by adding impurities while doping

Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

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How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

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we can run 2phase as 3phase .what will be the differnce with respect to phase angle, power, current between the two modes

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what is F.A.P in fire alarming system?

3 Answers  

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what is dc transformer? how it work?

15 Answers  

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what rectifiers is and what are the types of rectifiers?

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in 4 pole lap wound dc motor one brush is disconnected then what result in new voltage if its voltage is v volts power is p watts current is i amp

1 Answers   GATE,

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Is it possible Z axis excess error alarm reflect in X axis if yes explain ?

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what does the regenerative braking mean?and how it used for Dc motor? thanks.

2 Answers  

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explain comutator action in detail.thanks

0 Answers  

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How do you convert the lt amps on a transformer to the ht amps?

2 Answers  

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What is actual name of Transformer oil.

6 Answers  

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