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DC load flow is a method to estimate power flows through lines on AC power systems.
An accurate solution of the power flows on an AC system is a non-linear problem. Consequently it requires an iterative approach and there is no guarantee of reaching a "convergent" solution.
A "DC" load flow uses a simplified, linear form of modeling the AC system. Consequently its solution is non-iterative, and absolutely convergent. It becomes a routine algebra problem, solving multiple equations with multiple variables. It is inherently less accurate than a "full" AC load flow solution, but it is useful where fast, dependable solutions are essential, and the approximation is acceptable. In reality, there is nothing "DC" about a DC load flow. It solves for phase angles (an AC, reactive characteristic); it ignores resistance (a DC characteristic); and it ignores voltage (because the objective is just power flow). It probably derives its name from the similarity between this solution method and the method used to solve a DC system, which is also linear, non-iterative and absolutely convergent.
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Which way does DC power flow?
When you connect a load (motor, light bulb, etc.) in series with a power supply, current will flow, whether AC or DC depends on the power supply you are using.
What kind of AC load uses the energy needed to magnetize a motor or a transformer winding?
inductive load
What is difference between AC and DC load line?
A dc load line is formed by joining the 2 points wherin the slope is equal to the inverse of the load resistance.. whereas the ac load lin has a different slope... and it intersects the dc load line at the quiescent point.
What is the ratio of rms load voltage to mean load voltage?
The mean load voltage, in other words the average voltage, is zero in an ac system.
How is the heat load of a transformer calculated?
Heat load is calculated by the following equation Q=m*cp*deltaT m=mass flow rate cp=specific heat deltaT=difference in temperature
Can a diode work in ac?
A diode is a "one-way valve" that allows electrical current to flow in only one direction. A diode placed in series between an AC voltage source and a resistive load will allow current to flow through the load in one direction and block the current when the polarity of the AC voltage changes.
What does a load do to the flow of electrical current in a series circuit?
A load increases the flow of electrical current in a series circuit. No load, no flow.
Which way does DC power flow?
When you connect a load (motor, light bulb, etc.) in series with a power supply, current will flow, whether AC or DC depends on the power supply you are using.
What are Ac load lines in an amplifier and how they are drawn?
The dc load resistance is Rc but the AC Load resistance is (RcRl). If a load line is drawn the slope of which is -1(Rc Rl) . Then it is called an AC load line and it is to be used when the transistor is operating as an amplifier.
When you stepup ac voltage the current drops.What will happen with CURRENT if DC is stepped up?
WHEN YOU STEP UP THE VOLTAGE AND THE LOAD IS THE SAME MORE CURRENT WILL FLOW NOT LESS. AND THAT WILL HOLD TRUE FOR DC AS WELL. IF THE LOAD REMAINS THE SAME AND YOU INCREASE THE CURRENT AC OR DC THE VOLTAGE WILL INCREASE
Difference between dc load line and ac load line?
well the difference mainly exists in the method of finding them , these are :-1. in finding DC load line :-open all AC sourcesopen all the capacitors2. for AC load line:-open all the Dc sourcesshort all the capacitors.
What affect current flow?
In DC circuits . . .-- Voltage of the supply-- Resistance of the loadIn AC circuits . . .-- Both of the above, plus-- Frequency of the supply-- Reactance of the load
Ac and dc load line of BJT-explain?
when the dc supply given, dc load line lies in the Ic and Vcc. when the AC supply given, AC load line lies in the Ic and Vcc.
Which component slow down the current in circuit?
An inductive load can cause current to lag voltage in an AC circuit. An increase in resistance will decrease amount of current flow.
Can you install a diode to allow 24 volts AC to flow in one direction but not allow the flow of 24 volts AC to flow in the opposite direction?
Diodes convert AC into DC by allowing current flow in one direction only. Since AC is alternating between plus and minus it is not possible to use a diode to allow AC to flow in one direction and not in the other direction.
Ac voltage applied across a load resistance produce alternating current?
The reason an AC voltage applied across a load resistance produces alternating current is because when you have AC voltage you have to have AC current. If DC voltage is applied, DC current is produced.
How does an ac curcuit work if current cant flow through a capacitor?
AC current can flow through a capacitor, it's DC current that can't
