A transformer has primary and secondary windings of 200 and 800 turns, respectively. What is the input voltage if the output voltage is 132kV?
A
45,500V
B
33,000V
C
48,000V
D
250V
Verified Correct Answer: B.
Physical Principles & Numerical Solution
For a transformer: \(\frac{V_s}{V_p} = \frac{N_s}{N_p}\)
Given: N\(_p\) = 200 turns, N\(_s\) = 800 turns, V\(_p\) = ?, V\(_s\) = 132kv = 132000v
V\(_p\) = \(\frac{V_s \times N_s}{N_p}\)
V\(_p\) = \(\frac{132000 \times 200}{800}\) = 33000V
Source: Myschool Past Questions Archive (Record #78289)