The voltages at the ends of the primary and secondary windings of an unloaded transformer are U1 = 220 V and U2 = 20V. What is the ratio of the number of turns in the primary to the number of turns in the secondary?
These tasks: U1 (voltage value at the ends of the primary winding of the considered unloaded transformer) = 220 V; U2 (secondary voltage) = 20 V.
The ratio of the number of turns in the windings of the unloaded transformer under consideration) is the transformation ratio, which can be determined by the formula: k = N1 / N2 ≈ U1 / U2.
Let’s calculate: k = 220/20 = 11.
Answer: The ratio of the number of turns in the windings of the unloaded transformer under consideration is 11.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.