Question

A 3 MVA, 3300/240 V, 60 Hz single-phase ideal transformer has 80 turns on the secondary winding. The values of maximum flux and full load secondary current are,

10.81 mWb, 909 A

 

12.42 mWb, 10 kA

 

13.84 mWb, 8.3 kA

 

11.26 mWb, 12.5 kA

 

None of the above
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Answer 1

Answer:

11.26 mWb, 8.3 kA

Explanation:

induced emf in the secondary winding E2 = 240V

supply voltage,f  = 60Hz

number of turns of the secondary coil N2 = 80

maximum core flux = E2/4.44 f N2 = 240/4.44*60*80 = 0.0112612613 = 11.2612mWb