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 $



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