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

What will happen if the rotor circuit of a slipring I.M. is kept open & electric supply is given to its stator winding.

2 Answers  

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what do you mean by partial discharge in cable

1 Answers  

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Wat wil happen if Transformer is operated at 100 HZ Frequency?

8 Answers  

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Induction motor & transformer both has magnetic core,then why induction motor is a inductive load & transformer not???

6 Answers   SBL,

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Dear Sir I am living in Jaipur Rajasthan  now I did complete my b tech degree in electrical engineering in 2012  Sir how I gate certificate of competency for electrical supervisor

0 Answers   ONGC,

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what is the condition for vector group of Dyn5

2 Answers  

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How does and Earth Fault Relay operates in DG set control panel?

1 Answers   Cummins, University,

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what is power transformer?

1 Answers  

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What are the industrial applications of Superhetrodyne Receivers ? What are merits & De-merits of SuperHeterodyne Receivers ?

1 Answers   Airtel,

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A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 Answers  

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Explain how you decide what size of electrical wire do you need?

0 Answers  

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what will happen when square wave is fed into input side of 3kva transformer and what you will get on output side.

3 Answers   Blue Star,

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