The DC armature resistance of Y-connected alternator measured across its two terminals is 0.6 Ω. The per phase resistance is:
- 0.1 Ω
- 0.3 Ω
- 0.5 Ω
- 0.8 Ω
Correct answer: 2. 0.3 Ω
Explanation:
The DC resistance measured across any two terminals of Y connected alterantor is that of two phase. Therefore the per phase DC armature resistance is half of measured value. In current case it is: 0.6/2 = 0.3 Ω