Which factor decide the colour of the light emitted from a
Led?

Answer Posted / 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..

Is This Answer Correct ?    12 Yes 7 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

why are the maintaine power factor and how can this control and this is how work.

1477


IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

2163


what is smartµ grid technology?under coal gassification?

1513


What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?

1716


What is the necessary and sufficient condition for stability.

704






Name the test signals used in control system

789


how we do Vector group ,magnetic balance and tap changer test in Transformer?

2027


For high frequency application we use which transformer?

1344


Define what is difference between fuse and breaker?

667


if flux and load static in dc motor and supply voltage increases 20% then what happened in speed

1468


why impedance relay is used for medium transmission line protection

1805


what is acceptance test in electrical engineering.

1700


What is the function of a neutral reactor.

1310


How to configure the drives in PLC, through Profibus commnication. And to how to address it?

2357


What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1322