Question

in the circuit if the input voltage is 120 vp, what is vsec? select one: a. 120 vp b. 32 vp c. 40 vp d. 360 vp

Explanation:

Step1: Identify Transformer Ratio

The transformer has a turns ratio of 3:1 (primary:secondary). The input voltage (primary) is \( V_{p} = 120 \, \text{Vp} \). For a transformer, the voltage ratio is equal to the turns ratio: \( \frac{V_{\text{primary}}}{V_{\text{secondary}}} = \frac{N_{\text{primary}}}{N_{\text{secondary}}} \).

Step2: Calculate Secondary Voltage

Rearranging the formula: \( V_{\text{secondary}} = V_{\text{primary}} \times \frac{N_{\text{secondary}}}{N_{\text{primary}}} \). Substituting \( N_{\text{primary}} = 3 \), \( N_{\text{secondary}} = 1 \), and \( V_{\text{primary}} = 120 \, \text{Vp} \):
\( V_{\text{sec}} = 120 \times \frac{1}{3} = 40 \, \text{Vp} \).

Answer:

c. 40 Vp