why is the intensity of the incandescent bulb is much higher during late hrs compared to that during 7-8pm?

Question

It is somehow related to the fact tht during 7-8 pm period we would have leading power factor due to capacitive load providing us less output voltage.
But at late hrs as all lights r mostly shut capacitive load could be less providing us output as much as nearer to the input we hav from the power source station.

I dont hav the exact idea.Help me vit tht.

Answer 1

I'm not exactly sure what you are asking here, but I'll go out on a limb and say you might be noticing a difference in frequency.

From my experience of running equipment off generators in the past, i know you can load your supply down enough that the input frequency begins to drop. The human eye perceives higher frequency light as 'brighter'. So during your power consumption peak (evenings) the frequency is loaded lower than late nights when the load is low.

I'm not sure the freq difference would be really noticeable in an incandescent, but I have noticed a difference in motor speeds with a change of only a few Hz.

Answer 2

Stick a voltmeter in the nearest outlet and take some data. Incandescent lamps have a big swing in brightness with voltage.

Answer 3

Who informed you of this it is wrong. The only reason it could be different is if there was a great temperature change in which it would be controlled at the power station

Answer 4

It shouldn't be unless you have a fault in the wiring in your home or in the power coming to your home. A light bulb has no idea what time it is. It's probably all in your perception.