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# What does power factor mean?

# What does zero leading power factor mean?

A 'leading' power factor indicates that the load current is leading the supply voltage. Since power factor is the cosine of the angle by which the load current either leads or… lags the supply voltage (i.e. the load's phase angle), a cosine of 0 corresponds to a phase angle of 90 degrees. So, a power factor of 0 (leading) indicates that the load current is leading the supply voltage by 90 degrees, which means that the load must be purely capacitive.

# How can you describe about power factor?

The cosine of phase difference between the voltage and current........... Power factor is actually the ratio of the electrical 'true power' that does work in the real world -… the 'watts' of power that are converted to mechanical motion, heat etc - compared to the 'apparent power' volt-amps that the meters on the panel seem to show the load as using. Circuits containing inductors or capacitors draw energy from the supply mains to 'charge' (ie, store energy in their magnetic or electrostatic fields) while the voltage of the sinewave is changing but they return this energy to the supply 90 degrees later. This means they are drawing a current (drawing volt-amps), but not doing useful work with that current, so they're not consuming any true power (watts). An effect of inductors and capacitors is that they move the current waveform out of phase with the voltage waveform. The higher the proportion of stored energy to useful work, the greater the angle between voltage and current. Pure resistors don't store any energy, so all the volt-amps they draw get used as watts in the load. There's no phase shift between voltage and current, so they're 'in phase'. All the volt-amps are used as watts, so true power equals apparent power, and the ratio of true power to apparent power is 1.0 in a resistor. It has a 'power factor' of 1.0, or 'unity'. Circuits with inductors (or capacitors), though, draw volt-amps, some of which do useful work (eg, an inductive motor drives a load and heats the cooling air) and some of which is returned to the mains (from the stored magnetic field in the motor windings collapsing). Because some of the volt-amps are returned to the mains, there's less true power than volt-amps - so the power factor is less than 1.0 F'rinstance, a 220 volt motor draws 10 amps at full load, but delivers 2000 watts of power at the same time. It has a power factor of (true power) / (apparent power) = 2000 / (220 x 10) = 0.91 That means 91% of the 'apparent power' - volt-amps - is actually doing useful work - true power. Some places give power factor as a decimal fraction - 0.91 - while others give it as a percentage - 91%. In all cases, though, the angle between the voltage and the current - the 'phase angle' - can be found by finding the angle that has a cosine equal to the power factor. eg, the phase angle in the above example is (cos-1(0.91) or about 24.5 degrees lagging. That's what the answer at the top of this question is saying.

# What is plant factor in a power plant?

Plant Factor (The net capacity factor of a power plant ) -- To calculate the capacity factor, take the total amount of energy the plant produced during a period of time and di…vide by the amount of energy the plant would have produced at full capacity. Capacity factors vary greatly depending on the type of fuel that is used and the design of the plant. A base load power plant with a capacity of 1,000 megawatts (MW) might produce 648,000 megawatt-hours (MWÂ·h) in a 30-day month. The capacity factor is 0.9 or 90%. The Burton Wold Wind Farm consists of ten Enercon E70-E4 wind turbines@ 2 MW nameplate capacity for a total installed capacity of 20 MW.[2] In 2008 the wind farm generated 43,416 MWÂ·h of electricity. (Note 2008 was a leap year.) The capacity factor for this wind farm in 2008 was just under 25% Reasons for reduced capacity factor due to equipment failures or routine maintenance output is curtailed because the electricity is not needed or because the price of electricity is too low to make production economical. This accounts for most of the unused capacity of peaking power plants. Peaking plants may operate for only a few hours per year or up to several hours per day. Their electricity is relatively expensive. It is uneconomical, even wasteful, to make a peaking power plant as efficient as a base load plant because they do not operate enough to pay for the extra equipment cost, and perhaps not enough to offset the embodied energy of the additional components. A third reason is a variation on the second: the operators of a hydroelectric dam may uprate its nameplate capacity by adding more generator units. Since the supply of fuel (i.e. water) remains unchanged, the uprated dam obtains a higher peak output in exchange for a lower capacity factor. Because hydro plants are highly dispatchable, they are able to act as load following power plants. Having a higher peak capacity allows a dam's operators to sell more of the annual output of electricity during the hours of highest electricity demand (and thus the highest spot price). In practical terms, uprating a dam allows it tobalance a larger amount of intermittent energy sources on the grid such aswind farms and solar power plants, and to compensate for unscheduled shutdowns of baseload power plants, or brief surges in demand for electricity..... With best regards, Janybek Omorov

# Are load factor and power factor the same?

No Load factor is average power consumption rate divided by peak power consumption rate over a period of time. Power companies like customers who have very steady consumptio…n rates ......Load factors approaching 1 Power factor is true power / apparent power (kW/kV.A) and is a measure of how efficiently a customer's load consumes power. Certain types of electrical loads consume power more efficiently ( resistive element heating ) and they have a Power factor approaching 1. Other types of load such as old inductions motor are quite wasteful consumers of power and the utility has to provide more current ( amperage ) for the load to convert to real power

# What is the prime power factorization of 65?

65 = 5 Ă— 13

# What does factor mean?

A factor = a number which can be divided into a given number with no remainder. Factor, as a verb, means to break a number or term down into smaller component parts.…

# What is the meaning of utilization factor in hydro power plants?

the ratio of amount of energy generated during specified period to the energy could have been generated during that period by any palnt is the capacity utilisation factor.

# What does a Lagging power factor mean?

underdamped AnswerA lagging power factor describes a situation in which the load current is lagging the supply voltage. This describes an inductive load, such as a motor,… etc.

# What are the disadvantages of low power factor?

When you have a Power Factor less than 1 the voltage and current waveforms in an AC circuit are out of phase. Therefore at any given instant of time the work being done or ene…rgy being expended is calculated by multiplying the current x voltage. This reduces the wattage at any instant of time. When the Power Factor is one the instantaneous multiplication of the current and voltage would yield the maximum value with the waveforms in phase. This is much easier to see with a picture, but imagine a square wave for both voltage and current. Say for half the cycle the current is 2A and Voltage 3V and for the second half of the cycle both are zero. So for 1/2 the cycle the watts generated are 6 watts and zero for the second half of the cycle. Now if the two waveforms were 180 degrees out of phase the voltage would be zero when the current was 2A and the current would be zero when the voltage was 3V for zero watts. In this case the Power Factor would be zero.

# What is power factor in an electrical power system?

In an alternating current system, the voltage and current may or may not rise and fall at the same time. In resistive circuits it does but the current in other cases may lead …or lag the voltage. For a single phase system Power = Power Factor * V * I The power factor is the cosine of the angle between V and I and is a maximum (1) in resistive circuits.

# What are the advantages of leading power factor?

Leading power factor has no advantage as the apparent power will be greater than true or active power... So power factor should be as close to unity as possible... Lagging p.…f. causes high currents in line, whereas leading p.f. causes over-voltages.

# How do you use power factor indicator?

Power factor is a measure of how far out of alignment current wave is from the voltage wave form, Ideal power factor is 1 to 1 or as with most meters simply 1. Ie both wave fo…rms are insynch thus power used is accurate to power consumed. As power factor starts to lead or lag it appears to the watt meter that more power is being used then is actually being consumed by the device. This means a larger bill for power that you didn't actually consume. Highly inductive or capacitive loads cause power factor to go out of synch, if you are running a capacitive load you can realign power factor by adding an inductor or vice versa.

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# What does write each power as a product of the same factor mean in math?

The power refers to the base and exponent, so to write it as the product (multiplication answer) of the same factor you would expand the exponent for example: 7^2 = 7*7 or… 4^6 = 4*4*4*4*4*4.

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In Algebra

# What does it mean to write each power as a product of the same factor?

102 = 10 x 10 25 = 2 x 2 x 2 x 2 x 2

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In Technology

# What are the disadvantages of leading power factor?

Leading power factor results in higher receiving end voltage, which again results in increased power loss in Transformers & Cables same as lagging power factor.

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In Technology

# What is power factor?

The Power Factor is an indicator of the quality of design and management of an electrical installation. It relies on two very basic notions: active and apparent power. … The active power P (kW) is the real power transmitted to loads such as motors, lamps, heaters, and computers. The electrical active power is transformed into mechanical power, heat or light. In a circuit where the applied r.m.s. voltage is Vrms and the circulating r.m.s. current is Irms, the apparent power S (kVA) is the product: Vrms x Irms. The apparent power is the basis for electrical equipment rating. The Power Factor Î» is the ratio of the active power P (kW) to the apparent power S (kVA): The load may be a single power-consuming item, or a number of items (for example an entire installation). The value of power factor will range from 0 to 1.

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# What does factoring mean?

Factoring is the process used to find the whole numbers by which a given number may be divided without remainder.