Question

The primary winding of a transformer has $500$ turns whereas its secondary has $5000$ turns. The primary is connected to an ac supply of $20$ V, $50$ Hz. What will be the output of the secondary?

• A. $200$ V, $50$ Hz
• B. $100$ V, $50$ Hz
• C. $200$ V, $500$ Hz
• D. $250$ V, $50$ Hz

Answer 1

The correct option is A $200$ V, $50$ Hz

$N_p=500$ turns

$N_s=5000$ turns

$V_p=20$ V, $50$ Hz

$\frac{N_p}{N_s}=\frac{V_p}{V_s}$

$\Rightarrow V_s=V_p\times \frac{N_s}{N_p}=20\times \frac{5000}{500}$

$=200V,50Hz$