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What else can I help you with?
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
Why need to vacuum in transformer chamber before filling transformer oil and how long need to vacuum?
we need vacuum to remove moisture from tank
Why the power factor of load is not fixed on the transformer?
Because the transformer designer does not know the power factors of the different loads that might be connected to it. The way round this probem is to specify the voltage and the maximum current that the transformer can supply, then multply them together and print the VA, kVA or MVA rating on the transformer. Then it's up to the user to comply with this rating to avoid damaging the transformer.
Why transformer power factor taken unity?
It isn't! A transformer operating at no load has a very low power factor.
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.
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 is the full form of CT PT transformer?
CT=========current transformer PT=========potential transformer these are the instrumental transformers.
The transformer utilization factor of full wave bridge rectifier is?
3 phase 3 pulse form factor -> Edc= .675 Eac .675= 3/(pi*sqrt(2)) 3 phase 6 pulse form factor -> Edc = 1.35Eac 1.35= 2*(3/(pi*sqrt(2)))
What is dielectric test in transformer?
why need dielectric test for transformer
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.
What condition you get negative regulation for transformer?
When its load has a leading power factor.
