0
What else can I help you with?
What is the meaning of real electrical power (p) reactive power (Q) and apparent power (S)?
Active power: Power that is actually consumed. If you, in the time domain, multiply voltage and current continuously (i.e. via oscilloscope), then take the time-average of the result, that is related to active power. Reactive power: Power that is stored in components, then released again back to the source through the AC cycle. Capacitors and inductors both do this, just in opposite phase. Apparent power: The peak voltage times the peak current (or the RMS voltage times the RMS current, depending on if you're looking at peak power or average power). A power supply must be capable of outputting the full apparent power delivered to a circuit, not just the active power.
What is Differentiation Between Series circuit and parallel circuit?
In a series circuit, on the way from the positive to the negative power terminals, there is only one path for current to take from any point. If there is a point anywhere in the circuit where the current has a choice of two or more paths to take, then that segment at least is a parallel segment.
How measure 3phase power without wattmeter?
Take the current average of the three lines.Ex.Phase A = 10AmpsPhase B = 9 AmpsPhase C = 11 AmpsAverage = 10AmpsTake the voltage average of the three lines to ground,Phase A = 460VPhase B = 450VPhase C = 470VAverage 460VPower = V*I (Voltage times Current)Since we have a AC circuit,Power = V*I*1.732CommentUnfortunately, the above equation for power only works if you use line voltage; your explanation describes phase voltages. And, of course, it doesn't take power factor into account.
Why you take 0.95 as standard power factor?
When you need to calculate the estimated load or load current during initial design phase or so, you need to assume a value for power factor which is realistic. 0.95 is a realistic value.
Explain the need of power factor correction?
There are two types of power - real power and reactive power. Real power is power that is used, such as the power used to light a light bulb. Reacitve power is power that is held and released by a reactive element (capacitor or inductor), thus is not actually used to do any work. The reactive elements cause a phase shift between voltage and current, which manifests itself as a change in power factor. Power companies must supply both reactive and active power. Total power is equivalent to sqrt( Reactive^2 + active^2). Not only do they need to supply the reactive power, their equipment must be sized to handle a larger total power. Reactive power is generated by installing extra equipment - capacitor banks or inductor banks - or by running generation in such a way that more reactive power is created (this will lower the power plants' real power output). Depending on who the customer is, they may not be billed for the reactive power, thus the oversizing of equipment, and the supplying of reactive power does not generate any revenue (but costs them). If power factor is bad enough, the power company will lose money, and thus require power factor correction, or will bill on both real and reactive power usage. It's simple economics (money)!
If voltage and current are proportional why do they increase voltage in powerlines in order to decrease current?
Low current will equal low power losses due to the resistance of the cable. I squared R. (I is transmission current and R is resistance/Metre of cable) by increasing the voltage for the same amount of power the current decreases. Power transmission will take that advantage to transfer less current for the same amount of power.
How are series circuits and parellel circuits alike?
Both take current and energy from the power supply and dissipate power.
How is a series circuit and a parallel circuit alike?
Both take current and energy from the power supply and dissipate power.
How do you say the word take in spanish?
tomar is to take but you have to conjugate it according to who is doing the action i take- tomo we take- tomamos you take- tomas he/she/it takes- toma they/you guys take- toman
Is it safe to take both b-complex and biotin?
A B-Complex contains biotin. Take a decent B-Complex.
How can one find a unitary matrix?
To find a unitary matrix, one must first square the matrix and then take the conjugate transpose of the result. If the conjugate transpose of the squared matrix is equal to the identity matrix, then the original matrix is unitary.
If 3 - 2i is a solution to a polynomial equation is the complex conjugate 3 plus 2i also a solution yes or no?
Not necessarily, take for example the equation x^2=5-12i. Then, 3-2i satisfies the equation. However, 3+2i does not because (3+2i)^2 = 5+12i.
How many watts does it take to power a 24 voltage strobe light?
To calculate the power in watts, you would need to know the current the strobe light draws at 24 volts from its specifications. You can then use the formula P (Watts) = V (Voltage) x I (Current) to determine the power consumption. Without the current rating, it's not possible to provide an exact wattage.
What is stability as regards power supplies?
Voltage and current are the two important things a power supply usually needs to keep stable. Power supplies usually take wall current at 110-120 volts and 50-60 hertz and turn it into DC current at a particular voltage like 3, 5, 10, or 12 volts. If the voltage or current isn't stable, whatever is plugged into it could die from not having enough power, get errors from sudden changes, or even burn up.
Which starting system component uses a small amount of current to control a large amount of current?
I think its a starter solenoid or a relay. I know relays take high voltage current to power low voltage circuits. Hope that helps..
How many amps does a78kw 415volts 50 hz motor take?
To calculate the amperage, use the formula: Current (A) = Power (W) / (Voltage (V) * √3 * Power factor) Assuming a power factor of 0.8 for a typical motor, the current draw for a 78kW 415V motor at 50Hz would be approximately 111.58A.
Can president elect take power if a global war starts under current presidents term?
Yes. The US Constitution makes no provision for suspending the transfer of power during wartime.
