Firstly all voltages and currents should be in RMS values. (divide peak values by root 2).
Apparent Power
|S| = VI = (P2+Q2)0.5
Complex Power
S = P + jQ
P = |S|cos(theta)
Q = |S|sin(theta)
theta = phase angle between voltage & current (can be calculated by finding total impedence of the circuit)
Power Factor = cos(theta)
The formula is: current (in amps) = power (in watts) , divided by (240 times the power factor). The power factor is 1 for incandescent light or heaters, otherwise it can be assumed to be 0.75 for other loads.
Answer 1: TV's use single-phase power. Answer 2: TV's use single phase power of 220 or 110 volts ac power depending on what part of the world you live in.
NO! The voltages available in the 3-phase system are 480 (if you wire phase to phase) and 277 (if you wire phase to neutral) Don't try it!
It's an electrical generator converting mechanical power into electrical power. The electrical power comes out in the form of single-phase alternating current.
The real power in a DC system is the product of voltage & current. P = V * I In an AC system the power is equal to V * I * power factor. The power factor allows for the fact that the power is less than the volt-amps. This happens when the voltage and current are out of phase, i.e. if they reach their peak value at different points in the AC cycle. In fact if the phase difference is exactly 90 degrees, no real power is transferred at all, although the transmission wires still have to carry current and produce power losses as a result, The real power (in watts) is defined as the volt-amps times the cosine of the phase difference between voltage and current. Using the convention of complex numbers, the 'imaginary' power (in volt-amps-reactive or VAr) is defined as the volt-amps times the sine of the phase difference. The three quantities are connected by the Pythagoras formula: (VA) squared = (watts) squared + (VAr) squared.
Phase angle is defined as the angle by which the load current leads or lags the supply voltage in an AC circuit. There are numerous ways to calculate a circuit's phase angle, so there is no 'formula' as such. For example, if you know a load's resistance and impedance, or its true power and apparent power, then you can use basic trigonometry to calculate the phase angle, and so on.
In Europe they have both single phase and three phase.
The formula is: current (in amps) = power (in watts) , divided by (240 times the power factor). The power factor is 1 for incandescent light or heaters, otherwise it can be assumed to be 0.75 for other loads.
3 phase system has more power than a single phase system
AC power is electricially, a value that is expressed in watts and voltage is the electromotive force that combined with amps, makes up the formula to find watts. Watts is the product of Amps x Volts. W = amps x volts.
Answer 1: TV's use single-phase power. Answer 2: TV's use single phase power of 220 or 110 volts ac power depending on what part of the world you live in.
NO! The voltages available in the 3-phase system are 480 (if you wire phase to phase) and 277 (if you wire phase to neutral) Don't try it!
It's an electrical generator converting mechanical power into electrical power. The electrical power comes out in the form of single-phase alternating current.
hydroelectric power They produce what is called 3-phase AC power.
Power = Current * Voltage * Power FactorAbove expression can further be explore as :1. For DC CircuitsPower = Current * Voltage2. For Single Phase AC CircuitPower = Current * Voltage * Power Factor3. For Three Phase AC CircuitPower = Line Current * Line Voltage * Power Factor
Power = Current * Voltage * Power FactorAbove expression can further be explore as :1. For DC CircuitsPower = Current * Voltage2. For Single Phase AC CircuitPower = Current * Voltage * Power Factor3. For Three Phase AC CircuitPower = Line Current * Line Voltage * Power Factor
If current and voltage of an AC are in phase, then the "power factor" is 100%, and the load is a pure resistance, with no inductive or capacitive reactance (at least at the operating frequency of the AC).