The turns ratio of a transformer can be expressed in which way?

The turns ratio of a transformer refers to the ratio of the number of turns of wire on the primary coil to the number of turns on the secondary coil. This ratio can be expressed in several formats, which is why it is the correct answer.

For example, the turns ratio can be written as a fraction (e.g., 10:1), as whole numbers (10 for primary turns and 1 for secondary turns), or even in decimal form (10.0 for primary and 1.0 for secondary), which would still represent the same relationship. Additionally, it can be expressed conceptually in terms of percentages, indicating how much higher or lower the voltage on one side is compared to the other, but that format is less common for direct discussion of turns ratio.

Thus, being able to express the turns ratio in various ways facilitates better understanding and communication of transformer specifications in electrical engineering practices.