Electro Magnetic Induction And Alternating Currents Question 212

Question: The primary of a winding transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at 1000 V is 12 kW, what is the primary voltage?

Options:

A) 200V

B) 300V

C) 400V

D) 500V

Show Answer

Answer:

Correct Answer: A

Solution:

  • NP=400,n=NS=2000VS=1000V.

    VpVS=NpNs

    of Vp=VS×NPNS=1000×4002000=200V



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