Electro Magnetic Induction And Alternating Currents Question 260
Question: A step-up transformer has transformation ratio of 3 : 2. What is the voltage in secondary if voltage in primary is 30 V [BHU 1998; Pb. PMT 2004]
Options:
A) 45 V
B) 15 V
C) 90 V
D) 300 V
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{V_{s}}{V_{p}}=\frac{N_{s}}{N_{p}}=k\Rightarrow \frac{V_{s}}{30}=\frac{3}{2}\Rightarrow V_{s}=45\ V $
