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A lamp can be run by power from a telephone line.
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∙ 15y ago
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What will when two phases are given as input to an incandescent lamp?
I assume that you mean 'two lines', as you cannot connect anything across 'two phases'! The answer is that it depends on whether the line voltage exceeds the rated voltage of the lamp; if it does then the lamp will either burn out immediately, or have its life considerably shortened. If it doesn't then the lamp will operate normally.
If you have low voltage lights in your yard and you want to install a decorative street lamp how do you increase the voltage to power the 120V street lamp?
you don't run a new 120 line
What is line voltage in star connection?
Phase to phase voltage is 1.732 (the square root of 3) times the phase to star point (neutral) line voltage.e.g. if the line voltage is 220Vphase voltage = 1.732x220 = 380V (approx)Additional AnswerYou might also like to know that the line voltage leads the phase voltage by 30 electrical degrees. And, incidentally, the correct expressions are 'line-to-line' not 'phase-to-phase', and 'line-to-neutral' not 'phase-to-neutral' (think about it, a line voltage is measured from the junctions between adjacent phases, so they cannot be 'phase to phase'!)
What is the voltage of telephone line?
I'd say it wouldn't be -40 volt, but in fact 40 volt. I'm guessing you measured it with a multimeter and had your polarity (positive/negative) mixed up when you placed the leads on the telephone line. -------------------------------------------------------------- The nominal voltage between tip and ring on the telephone line is 48 VDC (it is provided by a 24 cell lead acid battery in the central office) but this can be reduced by line drop by as much as 9 VDC depending on how far you are from the central office. Tip is connected to the positive side of the battery and ring is connected to the negative side of the battery. The tip and ring twisted pair is isolated from ground, so either can be used as your multimeter reference as long as you are aware of polarity so the reading of the multimeter will make sense.
How do you convert 3 phase RMS line-line voltage to RMS line-neutral voltage on an unbalance system Basically how do you calculate using trig for all 3 phase?
The term, 'unbalanced system' refers to an unbalanced load. Under normal circumstances, an unbalanced load leads to unbalanced line currents. The line voltages are determined by the supply and remain symmetrical, even when the load is unbalanced. As your question refers to a 'line to neutral' voltage (i.e. a phase voltage), you must be referring to a star (wye) connected load, in which case the phase voltage (line to neutral voltage) is 0.577 (the reciprocal of the square-root of 3) times the line voltage (line to line voltage).
What is the voltage of a telephone line?
48 VOLTS
What will when two phases are given as input to an incandescent lamp?
I assume that you mean 'two lines', as you cannot connect anything across 'two phases'! The answer is that it depends on whether the line voltage exceeds the rated voltage of the lamp; if it does then the lamp will either burn out immediately, or have its life considerably shortened. If it doesn't then the lamp will operate normally.
What will happen when two phases are given as input to an incandescent lamp?
its burn that lampAnswerI assume that you mean 'two lines', as you cannot connect anything across 'two phases'! The answer is that it depends on whether the line voltage exceeds the rated voltage of the lamp; if it does then the lamp will either burn out immediately, or have its life considerably shortened. If it doesn't then the lamp will operate normally or may even be dim. It's all to do with the rated voltage of the lamp, now how it's connected!
If you have low voltage lights in your yard and you want to install a decorative street lamp how do you increase the voltage to power the 120V street lamp?
you don't run a new 120 line
Why telephone line has negative voltage?
A negative live voltage is used to prevent electroytic corrosion on the copper wires.
What is the voltage of telephone line in Pakistan ptcl?
it has 52volt dc off hook
Why is there a curve and not a straight line in the graph for a filament lamp?
I had to answer this and found out that............ The line on the graph that represents the filament lamp is curved because the resistance of it increases with supplied voltage Hope this is alright for you :) x
Can I use 18 AWG speaker wire to rewire a lamp?
No! Most lamp cords are made with 18 guage wire, some speaker wire is made with 18 guage wire too but the insualtion of the wire is very different. Both wires have insulation for their intended uses. Supplying a lamp with line voltage and supplying a speaker with low voltage are very different. The speaker wire is not meant to carry line voltage and may overheat and or melt.
A telephone-repair technician uses a meter to measure voltage on a phone line. This meter is an example of .?
it is hardware not software
Can you use a 120V table lamp on a 227v line?
The answer is possibly. There is no guarantee that the insulation designed for the lower voltage will be adequate at the higher voltage. The danger of electric shock should not be scorned. The cost of a new lamp is not daunting, and if the lamp is an heirloom item, then that value should enable the wiring and switches be upgraded. Don't take chances.
How do you change the color of a light switch switch?
Easy, paint the exposed part the color of your choice. Hard, call a pro and have him/her install the desired colored switch....pkazsr Paint it.
What is line voltage in star connection?
Phase to phase voltage is 1.732 (the square root of 3) times the phase to star point (neutral) line voltage.e.g. if the line voltage is 220Vphase voltage = 1.732x220 = 380V (approx)Additional AnswerYou might also like to know that the line voltage leads the phase voltage by 30 electrical degrees. And, incidentally, the correct expressions are 'line-to-line' not 'phase-to-phase', and 'line-to-neutral' not 'phase-to-neutral' (think about it, a line voltage is measured from the junctions between adjacent phases, so they cannot be 'phase to phase'!)
