Question

the syncronous methode is used to find____of an alternator​

Answer 1

Answer:

Normally for voltage regulation calculation, we use methods like :

Synchronous impedance method

Armature turn or mmf method

Zero pf or Potier method

Synchronous impedance method gives result which is higher than the original value. That's why it's called the 'pessimistic method'.

Armature turn or mmf method gives value which is lower than the original value. That's why it's called the 'optimistic method'.

Hence, the most accurate method of voltage regulation is the Potier method. This can be done using no-load or OCC curve and Full load ZPF curve( not SCC). It is based on the separation of armature leakage reactance drop and the armature reaction effects.