0
What else can I help you with?
What happens when lagging Power Factor changes to leading PF?
when lagging Power Factor changes to leading PF, then the voltage across the circuit in which capacitor bank is connected, is increased.
What will happen if 2 phase load is connected to generator?
There is no such thing as a two phase load any more. Any two legs from a three phase system are classed as single phase. If this single phase load is connected across the generator it will induce an imbalance in the output voltages of the generator. This is one reason that single phase loads on a three phase generator should be shifted around to find the best possible balance.
What is the function of capacitor across the supply to the fluorescent lamp when it is used?
A capacitor is placed across the supply of a fluorescent lamp circuit to correct the power factor
What happens when a charged capacitor is connected across an uncharged one?
When a charged capacitor is connected to an uncharged capacitor charge flows from the charged to the uncharged capacitor until there is no net force on the charge carriers. This means that both capacitors are at the same potential, because if they were not, there would be an electric fieldand hence a force on the charge carriers of magnitudeand the charge carriers would move to equalize the potentials and reduce the electric field and hence the force, eventually to zero. Of course, as charge flows from one capacitor to the other, the total charge is conserved. In the diagram above, when switch is closed chraged flows from the top capacitor to the bottom. When charge has stopped flowing, Also, because the potentials are equal(1) Suppose then that the capacitor at top left is initially charged to potential ofand that it has capacitanceand is then connected to a capacitance Initiallystores a charge Then (3) From (1) (4) Sub (4) into (1) to get Now usefor either capacitor to findUsing it for (2) gives from A Level Physics Notes
When a circuit consists of a capacitor and a resistor in series with a voltage source and the voltage across the resistor becomes zero then the capacitor is?
fully charged.
How does the voltage across a parallel plate capacitor change when connected to a battery?
When a parallel plate capacitor is connected to a battery, the voltage across the capacitor increases as it charges. The battery provides a potential difference that causes charges to accumulate on the plates, leading to an increase in voltage until the capacitor is fully charged.
A resistor and a capacitor are connected in parallel across a 120 v dc source determine the voltages across the resistor and the capacitor?
Since they're connected in parallel directly across the source, the voltages across both componentsare equal, and are equal to the source, i.e. 120 v DC.
IF capacitor that has been connected across a battery for comparatively long time becomes?
If the capacitor isn't punctured or failed, then it becomes charged to the voltage of the battery almost immediately after it's connected to it, and stays that way.
Suppose a parallel plate capacitor (with capacitance) is connected to a battery, what is the relationship between the charge stored on the capacitor and the potential difference across its plates?
The relationship between the charge stored on a capacitor and the potential difference across its plates is that the charge stored on the capacitor is directly proportional to the potential difference across its plates. This relationship is described by the formula Q CV, where Q is the charge stored on the capacitor, C is the capacitance of the capacitor, and V is the potential difference across the plates.
How a trimmer capacitor use?
A trimmer capacitor is a semi-adjustable capacitor placed across a variable tuning capacitor and pre-set to allow the main capacitor to track correctly with another variable capacitor on the same shaft. The adjustment takes out any differences introduced by the connected circuit.
What does a capacitor charge graph illustrate about the behavior of a capacitor in an electrical circuit?
A capacitor charge graph shows how the voltage across a capacitor changes over time when it is connected in an electrical circuit. It illustrates that initially, the voltage across the capacitor rises quickly as it charges up, but eventually levels off as the capacitor becomes fully charged. This graph helps to understand the time it takes for a capacitor to charge and how it behaves in a circuit.
What happens when heavy loads are connected to an electrical generator?
If the load is too heavy the voltage droops because of the drop across the generator's internal impedance.
Can a capacitor hold open an ac relay?
No, because as soon as a load is connected across a capacitor it will discharge. You need a continuous voltage supply across the coil of a relay to keep it energized. Yes. A large capacitor, 10000 mfd, can hold open a small relay for a few seconds, plus or minus, depending on your varibles.
Can the voltage across a capacitor change instantaneously?
No, the voltage across a capacitor cannot change instantaneously. It takes time for the voltage across a capacitor to change due to the storage and release of electrical energy in the capacitor.
Why are capacitors parallel?
Capacitors are said to be connected together "in parallel" when both of their terminals are respectively connected to each terminal of the other capacitor or capacitors. The voltage (Vc ) connected across all the capacitors that are connected in parallel is THE SAME. Then,Capacitors in Parallel have a "common voltage" supply across them giving: VC1 = VC2 = VC3 = VAB = 12V
How does charge sharing occur between two capacitors connected in a circuit?
Charge sharing between two capacitors connected in a circuit happens when one capacitor releases some of its stored charge to the other capacitor, equalizing their voltages. This occurs until both capacitors have the same voltage across them.
A series LCR circuit consisting of R10 ohms and impedence 20 ohms is connected across an ac supply of 200 v rms The rms voltage across the capacitor is?
16.32 volts
