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Power factor is the cosine of the phase angle between voltage and current. In a resistive load, current is in phase, i.e. with a phase angle of 0 degrees, with respect to voltage. Cosine (0) is 1.
Wiki User
∙ 12y ago
Wiki User
∙ 8y agoExactly 1 because the voltage and current are always in phase.
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What power plant has high load factor?
Diesel Engine has high load factor
Why a rotor of an alternator at rated power dissipates more heat at a low power factor load than at a high power factor load?
at lower power factor current drawn by load is high and at higher pf the current drawn is less...
What is the relationship betweenth the power factor and the load?
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 consumption 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
Is it possible to transmit power with leading power factor?
The power factor depends on the properties of the load, and if any power factor correction is done it has to happen at the load, so that the current in the transmission lines is reduced. Correcting the power factor at the sending end fails to address the problem.
Is it advisable to correct the power factor to unity?
power factor depends on the load being fed if the load is entirely resistive power factor will be unity ..if the load includes an inductor or capacitpr due to phase displacement between v and i the pf will be lag or lead respectievly
Why the power factor improves with the load?
Power factor doesn't necessarily 'improve with the load', but it is determined by the load.
Why power factor can not be unity?
Power factor can be unity. If the load is purely resistive, then the load current and supply voltage are in phase, and the load will have unity power factor.
How do you convert power load to VA?
Divide Power Load by "Power Factor"
Why is the power factor at no load less than full load?
That's not possible. The power factor is related to the phase difference between voltage and current on the line. "No load" means 'no current', so power factor is meaningless with no load. If you see a power factor, there must be a load, even if it's some device that you're not aware of.
What power plant has high load factor?
Diesel Engine has high load factor
What are the advantages and disadvantages of unity power factor?
There is no disadvantage of unity power factor, because at unity power factor all the electrical power is efficiently utilized by the the load, and at lagging power factor some power is lost in the load's magneticfield.
Does low load in transformer lead to low power factor?
Power factor is determined by the nature (resistive, inductive, capacitive) of a load, not whether it is a low load or a high load.
What is the importance of load factor in power system planning?
load factor is the ratio of average load to max demand for a given period.High load factor meansless cost per KWHmore efficient use of power plant
Why a rotor of an alternator at rated power dissipates more heat at a low power factor load than at a high power factor load?
at lower power factor current drawn by load is high and at higher pf the current drawn is less...
What is the relationship betweenth the power factor and the load?
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 consumption 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 value of power factor for a pure capacitor?
0. Power factor has to do with the amount of real power. if you have a purely capacitive load, there is no real power flow, thus pf = 0. For purely resistive load, power factor will be 1.0.
Why does the power factor of the load effects the V.R. of transformer?
With varying power factor the load current drawn changes, which in turn affects the voltage regulation
