Following are data from a test of a 3 KVA 240/120V 60Hz single-phase transformer: Resistance 120 V wuinding 0.005 Ω Resistence 240V wuinding 0.184Ω core loss 28W Find the efficiency of the transformer when it delivers rated kilo-voltamperes at unity factor. A- 90%, B- 93.4%, C- 97.1%, D- none.
Following are data from a test of a 3 KVA 240/120V 60Hz single-phase transformer: Resistance 120 V wuinding 0.005 Ω
Resistence 240V wuinding 0.184Ω
core loss 28W
Find the efficiency of the transformer when it delivers rated kilo-voltamperes at unity factor. A- 90%, B- 93.4%, C- 97.1%, D- none.
Find the size of wire in circular mils in each winding of a 10 KVA, 240/240V, 60 Hz single phase transformer if the number of circulare mils per ampere to be use in cach winding is 1000. wha is the ckissest AwG side in ech case?AWG size of 2400V winfing. A- 4 AWG, B-12-AGW, C- 14 AWG, D- none
AWG size od 240V winding A-4 AWG, B- 12 AWG, C-
the efficiency of the transformer can be calculated using the following relation
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