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In the US a service drop transformer (on the pole or underground) converts the distribution voltage to 220VAC center tapped, which provides two opposite phased 110VAC outlet and lighting use and/or one 220VAC single phased high power for heating and cooking use. Occasionally 230VAC center tapped or 240VAC center tapped is provided instead of 220VAC.
Wiki User
∙ 6y ago
Wiki User
∙ 14y agoFrom the primary high voltage to the secondary voltage used in your house the device is called a transformer.
Wiki User
∙ 11y agobeausue is is to high so it is too danguos for humans.
Anonymous
Because then otherwise it would be too high cause it to be dangerous to humans
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The voltage across a short circuit is equal to?
zero? the supply voltage? the supply voltage minus the individual coltage drops? the sum of the individual voltage drops? which one?
What happens to supply voltage if additional resistance is connected in parallel circuit?
No change in supply voltage as additional resistance is connected in parallel circuit.
How is the voltage of the power supply for a series circuit calculated?
The circuit by itself doesn't determine the voltage of the power supply. If there's some additional requirement that goes along with the circuit, such as "The current through the circuit must be XYZ amperes.", or "The voltage across the third component from the north end of the circuit shall be ABC volts,", then that requirement would dictate the power supply voltage. But in order to calculate it, you'd need the knowledge of every component in the series circuit.
Why do light bulbs glow differently in a series circuit than in a parallel circuit?
Lamps will only operate at their rated power when subjected to their rated voltage -which is why you will see both figures shown on the glass envelope (e.g. 60 W / 230 V or 60 W / 120 V, etc.). If you connect lamps in parallel, because each branch is subject to the same voltage (i.e. the supply voltage), each lamp has the same voltage applied and will operate at its rated power. If you connect lamps in series, the supply voltage will distribute itself as a series of voltage drops where the sum of the voltage drops will equal the supply voltage. So none of the lamps is subject to its rated voltage, so none will operate at its rated power -i.e. they will be dim!
How much voltage does each branch of a parallel circuit?
Yes. The voltage across every branch of a parallel circuit is the same. (It may not be the supply voltage, if there's another component between the power supply and either or both ends of the parallel circuit.)
How does the number of bulbs affect the amount of electrisaty in a circuit?
Adding additional lamps has no effect on the supply voltage supplied to you home. If the lamps are connected in series, then the sum of voltage-drops appearing across each lamp will equal the supply voltage. If the lamps are connected in parallel, then the voltage across each lamp will equal the supply voltage.
What causes speed drop in motor?
1) If current, at 'on load' condition, reach or cross its rated value, then the speed of the motor will be decreased. 2) If there is any voltage droop occurs in the incoming supply then the speed of the motor will be decreased.
How decreased blood supply effect muscle activity?
Decreased blood supply in the muscle can cause anoxia then paralysis.
What is the term for decreased blood supply?
Ischemia is the medical term meaning decreased blood supply. Prolonged ischemia can lead to infarction.
How can you get 12volts supply from speaker?
You can not. Speakers do not supply a voltage they need a voltage to operate correctly.
Why speed is decreased when field current increases in dc motor?
Because with more field, the armature produces the same voltage at less speed. The voltage generated by the motor must always be less than the supply voltage. A motor that is driven faster than it wants to go becomes a generator.
What is the main of flame trap?
A device that prevents a gas flame from entering the supply pipe.A device that prevents a gas flame from entering the supply pipe.
Do you add electrical supply voltage and induced voltage of a coil to get total voltage on the coil?
The induced voltage acts to oppose any change in current that is causing it. So, if the current is increasing, then the induced voltage will act in the opposite direction to the supply voltage; if the current is decreasing, then the induced voltage will act in the same direction as the supply voltage.
The voltage across a short circuit is equal to?
zero? the supply voltage? the supply voltage minus the individual coltage drops? the sum of the individual voltage drops? which one?
How many watts will be neede to supply 400 amp welder?
It depends on the supply voltage watts = current in amps times the supply voltage
What are the main purposes of the battery?
to provide current to start vehicle and supply modules with voltage before start up
What is a decreased supply of oxygenated blood to tissue?
apoxia
