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What is meaning of Transformer stability and sensitivity?
What is meaning of Transformer sensitivity?
What is the need of form factor in transformer?
transformer is a static device hence it needs form factor.
What is the condition for zero voltage regulation of a single phase transformer?
zero volatge regulation means the terminal volatge of transformer at full load on a given power factor become equal to the rated teriminal volatge of transformer , it happens only for leading power factor in transformer
What is the use of transformer utilisation factor?
It tells us how much is the transformer utilised in a given process. For a rectifier,TUF =(D.c.power delivered to the load)/(power rating of transformer secondary)
Is there any relation with vector group of transformer with power factor?
yes there is
What is meaning of Transformer stability and sensitivity?
What is meaning of Transformer sensitivity?
What is the need of form factor in transformer?
transformer is a static device hence it needs form factor.
Why transformer power factor taken unity?
It isn't! A transformer operating at no load has a very low power factor.
What is stacking factor of magnetic cores?
Magnetic cores are made up of thin ,lightly insulated ( coating of varnish ) laminatians to produce power loss in cores due to eddy current phenomenon . as a result ,the net cross sectin area of the core occupied by the magnetic material is less than its grosss cross section ; their ratio ( less than unity ) is known as stacking factor . depending upon the thicknesss of lamination ,stacking factor vary from 0.5 to 0.95 approching unity asthe lamination thickness increase
If power factor is 8 then how many ampere there will be in each phase of a 250 kva transformer?
The power factor is only taken into consideration when the Kilowatts of a transformer is used.
7th sem EEEModel question paper for design of electrical apparatus?
what is stacking factor?
What is the condition for zero voltage regulation of a single phase transformer?
zero volatge regulation means the terminal volatge of transformer at full load on a given power factor become equal to the rated teriminal volatge of transformer , it happens only for leading power factor in transformer
Why you are indicating capacity of transformer in KVA?
transformer action doesn't depend on power factor that is why we indicate its rating in KVA
What are common efficiencies for transformers?
Transformer utilization factor is the ration of power delivered to the load and ac rating of the transformer secondary.
What is the use of transformer utilisation factor?
It tells us how much is the transformer utilised in a given process. For a rectifier,TUF =(D.c.power delivered to the load)/(power rating of transformer secondary)
What is the kw of 100kva transformer and how you calculate?
The kW rating of a transformer can be calculated by multiplying the kVA rating by the power factor. For example, if the power factor is 0.8, then the kW rating of a 100 kVA transformer would be 80 kW. You can also use the formula: kW = kVA x power factor.
When is a transformer closet to unity power factor?
When it supplies a resistive load.
