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Why generators are rated at 0.8 lagging power factor?
Rated power factor
Is it possible for generators having different power factor to work together?
yes, it is possible. in fact in power systems all the generators do not run with same power factor.
Why the transfermer rating is in KVA where as generator rating is KW?
Transformers are rated based on the amount of current flowing through them, irrespective of whether the current is in phase with the voltage or not, thus KVA. When it comes to generators, what the owner is interested in is how much real power the generator can deliver (watts). Most generators are rated at a specific real power and a power factor (often .95).
What uses Hydroelectric power?
Hydroelectric power plants. They have dams and generators. Water flows through a dam, which spins generators that produce hydroelectric electricity. (Fun Fact: The Hoover Dam is the biggest hydroelectric power plant.)
What are the iee regulations that govern the installations of generators?
The IEE regulation that govern the installations of generators is that they should have a power factor of 0.7.
What is power factor in electrical?
Ratio of voltage rating and current rating is called power factor in electricalAnswerPower factor can be defined in a number of ways -for example:cosine of the phase angleratio of true power to apparent powerIt has nothing to do with the ratio of voltage rating to current rating!
Where can vertical wind generators be found?
Vertical wind generators (turbines) are used in the midwest, where the wind is a major factor. There are international wind farms which supply electricity from the power of these generators.
Why alternator power factor 0.8?
In terms of generators, the alternate power factor is generally 0.8 for most models. This factor is defined as the power needed to operate within the limits of he generator capability curve.
Why the rating of transformer in kva?
because we dont know power factor of the secondary laod
How select the rating of capacitor with respect to KW for improving power factor?
The capacitors must be sized according to the reactive power being used, not the real power being used, to improve power factor.
Why the generating station rating is in KW though the rating of generators in KVA?
The volt ampere is a measurement of apparent power, while the watt is a measurement of true power. Apparent power is simply the product of voltage and current; the output of a transformer, therefore, is the product of its rated secondary voltage and its rated secondary current -i.e. the apparent power of the transformer. The power supplied, in watts, is determined by the power factor of the load, so there is little point in rating a transformer in watts, as the designer has no means of knowing the power factor of the load it is to supply.
What is VA rating?
VA Rating stands for Volt-Ampere Rating, It is the basic unit of Alternator or Transformer. This is so because in AC System Power(P) is the product of Voltage(V),Current(I)and Power Factor. Power(P) = Voltage(V) * Current(C) * Power Factor But power factor of the load is never constant and depends on the type of load. So to resolve this problem power ratings of the above mentioned machine is always rated in VA or KVA and its the product of voltage and current.
