# _______ of an alternator can be obtained using zero power factor method.

_______ of an alternator can be obtained using zero power factor method.

### Right Answer is:

Voltage regulation

#### SOLUTION

**Voltage regulation of an alternator can be obtained using the zero power factor method.**

**Detailed Explanation**

__ZPF or Potier triangle method:__

- This method depends on the separation of the leakage reactance of armature and its effects.
- It is used to obtain the leakage reactance and field current equivalent of armature reaction.
- It is also called a general method of voltage regulation.
- It is the most accurate method of voltage regulation.
- For calculating the regulation, it requires open circuit characteristics and zero power factor characteristics.

**The following assumptions are made in this method.**

- The armature resistance is neglected.
- The O.C.C taken on no-load accurately represents the relation between MMF and voltage on load.
- The leakage reactance voltage is independent of excitation.
- The armature reaction MMF is constant.