To get the ideal result of voltage transformation ratio, both primary and secondary voltages have to be taken in a ratio format. Since this is a voltage transformation that is to be considered in this process; it is of utmost importance that a number of windings is to be measured.

It is this number of turns in a secondary winding that is to be placed against a number of turns that is to be faced in a primary winding that is constituted as voltage transformation ratio.

When N_{2 }is less than N_{1} and K is less than 1, it is condition of a step-down transformer.

When N_{2 }is greater than N_{1} and K is greater than 1, it is condition of a step up transformer.

**Links of Previous Main Topic:-**

- Current Electricity Basic Concepts
- Introduction to Alternating Current
- Introduction Three Phase A C Circuits
- Magnetic Field
- General Aspects
- Elementary Theory of Ideal Transformer
- E M F Equation of a Transformer

**Links of Next Electrical Engineering Topics:-**

- Transformer with Losses but No Magnetic Leakage
- Resistance and Magnetic Leakage
- Transformer with Resistance and Leakage Reactance
- Equivalent Resistance and Reactance
- Total Voltage Drop in a Transformer
- Equivalent Circuit
- Transformer Tests
- Regulation of a Transformer
- Percentage Resistance and Reactance
- Transformer Losses
- Transformer Efficiency
- All Day Efficiency
- Transformer Noise
- Auto Transformer
- Polarity of Transformers
- General Aspects Polyphase Induction Motors
- Single Phase Motors
- Characteristics of D C Generators
- Measuring Instruments
- Power Supply System