JEE Main & Advanced Physics Alternating Current Wattless Current Such a circuit is called the wattless circuit and the current flowing is called the wattless. Wattless Current – Wattless Current – Alternating Current Video Class – Alternating covering Power of Alternating Current Circuit, Alternating Current Generator. Current flowing through an ac circuit in which power consumed is zero is called wattless an a.c. (alternating current) circuit, there are two components.
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Thus, stopping potential is independent of the incident radiation. Answered by Expert 22nd June2: This content is available for subscribed users only. Therefore, the only product terms that have a nonzero average are those where the frequency of voltage and current match. Voltage levels and reactive power flow must be carefully controlled to allow a power system to be operated within acceptable limits. A perfect resistor stores no energy; so current and voltage are in phase.
This is done such that a leading current capacitive load, negative reactance results in negative reactive power. In this case, only active power is transferred. Hence, harmonic currents will reduce the power factor. Such current is called wattless current. Click here to login Close. The result of this is that capacitive and inductive circuit elements tend to cancel each other out.
This is particularly useful in power electronics, where nonsinusoidal waveforms are common. Calculate his average speed for the entire journey. This usually takes the form of capacitor banks being used to counteract the lagging power factor caused by induction motors. Wbut this unit is generally reserved for active power. When a voltage is initially placed across the coil, the inductor strongly resists this change in current and magnetic field, which causes a time delay for the current to reach its maximum value.
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With what speed did he cover the second part of the journey? An AC circuit containing only Capacitor or inductor will have zero power dissipation even though the current is flowing through it.
The active power is W and the phase angle between voltage and current is Your Answer has been posted successfully. Archived copy as title Webarchive template wayback links All articles with dead external links Articles with dead external links from June Articles needing additional references from October All articles needing additional references. From Wikipedia, the free encyclopedia. There is no net transfer of energy to the load; however, electrical power does flow along the wires and returns by flowing in reverse along the same wires.
Calculate his average speed for the entire journey. Reactive power flow strongly influences the voltage levels across the network.
Arc-fault circuit interrupter Earth leakage circuit breaker Residual-current device GFI Power-system protection Protective relay Digital protective relay Cugrent hexafluoride circuit breaker. Enter your valid mobile number below. Unsourced material may be challenged and removed. Retrieved 4 April The power flow has two components – one component flows from source to load and can perform work at the load; the other portion, known as “reactive power”, is due to the delay between voltage and current, known ccurrent phase angle, and cannot do useful work at the load.
Originally, apparent power arose merely as a figure of merit. Please Select Your Board First. In practical applications, this would be done in the digital domain, wattpess the calculation becomes trivial when compared to the use of rms and phase to determine active power:. Views Read Edit View history.
This article is about power in AC systems. Categories Electric power distribution Electricity economics Power station technology Portals Energy Renewable energy Sustainable development.
A capacitor is an AC device that stores energy in the form of an electric field. Archived from the original on Please Login to post the question. The system operator will perform switching actions to maintain a secure and economical voltage profile while maintaining a reactive power balance equation:. Please login to see your posted questions. To get the best experince using TopperLearning, we recommend that you use Google Chrome.
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Energy stored in capacitive or inductive elements of the network give rise to reactive power flow.