Question

In an ideal transformer, the turns ratio is \[\frac {N_p}{N_s}\] = \[\frac {1}{2}\]. The ratio V_s : V_p is equal to (the symbols carry their usual meaning) ______.

Options

• 1:1

• 1:4

• 1:2

• 2:1

Answer 1

In an ideal transformer, the turns ratio is \[\frac {N_p}{N_s}\] = \[\frac {1}{2}\]. The ratio V_s : V_p is equal to (the symbols carry their usual meaning) 2:1.

Explanation:

For an ideal transformer,

\[\frac{N_p}{N_s}=\frac{V_p}{V_s}=\frac{1}{2}\]

⇒ \[\frac{V_s}{V_p}=\frac{2}{1}\]

Or, V_s : V_p = 2:1