In a ideal transformer, the turns ratio Np/Ns = 1/2, The ratio Vs : Vp is equal to (the symbols carry their usual meaning) :
Correct Answer :
2 : 1
Solution :
For an ideal transformer the voltage ratio between the secondary (Vs) and the primary (Vp) is equal to the turns ratio of the secondary to the primary:
The problem gives the inverse turns ratio:
To obtain we simply take the reciprocal of the given ratio:
Substituting this value into the voltage‑ratio equation gives:
Therefore the ratio of secondary voltage to primary voltage is
Vs : Vp = 2 : 1.
Access expert-curated educational resources and study materials—completely free.
Create, conduct, and manage professional online assessments with Mindyard. Perfect for teachers and institutes.
Copyright © 2026 Mindyard. All Rights Reserved.
