what is LDR used in street light
Answers were Sorted based on User's Feedback
Answer / thwosif_emrson
By using a LDR needs no manual operation for switching ON
and OFF. When there is need of light. It detects itself
weather there is need for light or not. When darkness rises
to a certain value then automatically street light is
switched ON.
Is This Answer Correct ? | 44 Yes | 3 No |
Answer / vijay
LDR=LIGHT DEPENDENT RESISTOR
THE ABBREVIATION ITSELF STATES THAT LIGHT GLOWS DEPENDING
UPON THE VALUE OF RESISTANCE.
LDR IS CONNECTED IN PARALLEL TO THE LIGHT.
IF RESISTANCE IS MORE LIGHT GLOWS MORE EFFECTIVELY
IF RESISTANCE IS LOW LIGHT INTENSTITY WILL BE VERY LESS.
Is This Answer Correct ? | 12 Yes | 7 No |
is there any pottential in neautral?
Is it necessary to install Lighting Arrester on both side side (i.e HT and LT) of Transformer in a transmission substation? if yes Why on both side?
when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
why there is a high voltage line in multiplication of 11?i.e.- -66kv,11,kv,22kv
Why? We r used 50sq. mm. And above size cable in 3.5 core and below size are used in 4core
how can we test the vector group of transformer
At 765Kv, I have seen the use of PT at line side for metering and CVT for protection, although as far as my knowledge is concern, PT at this voltage level will have huge loss and more cost as compared to CVT as CVT can also perform same function of Protection and Metering? So my question is why use PT and not CVT for metering and protection in order to reduce the cost.
Is an SCR semi controlled device?
Define delay time.
I want to make street light with solar system ... What may I do for procedure and how much of estimation for each material ... If any one knows guide me and inform this id : aravindd7@gmail.com
why are you interested in joining in core company instead of joing in software company
can we amplify dc signals.how can it be done