How does frequency affect KVA rating of a transformer?
If a 500 kva, 500 to 250 v, 60 hz t/f used in Canada is to be operated on 50 hz in Europe
frequency then how will its KVA rating change?
a-increase
b-decrease
c-remains same
The transformer EMF equation shows that the EMF induced in the secondary or the primary side of a transformer is directly proportional to the product of the flux (Φm) through the transformer core and the frequency. This leads to the flux is proportional to E/f.
For example, the kVA rating of the 500v to 250v 60 Hz transformer will be smaller when used in Europe with a frequency of 50Hz.
500/60 = E/50 E is smaller than 500v on primary side.
250/60 = E/50, E is smaller than 250v on secondary side
Is This Answer Correct ? | 1 Yes | 0 No |
If connected load of Asphalt plant is 375Kw. What suitable KVA DG set is required. What is calculation formula. what extra load have to consider. in what efficiency it will work.
What is meant by Active and reactive power?
how a vibration switch's high signal will going to trip the motor? can u explain with some examplesand wiring diagrams?
why our power production in multiple of 11, in strictlly asking why our o/p voltage of alternators is 11kv only and whynot graterthan 15 and016KV?
What is DPR relay, And what for??
what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor
why transformers are rated in KVA
whats the advandage of PMG in alternator?
why high current produce in case of transformer when turns are internally gets shorted.
At what factor resistance r of a conductor depends?
how induction generator generated the power without excition like syncronous generator.
We order Dyn 5 distribution transformer to a company. What arrives is Dyn 11. Is it ok to use this transformer. It will be installed alone.