In case of alternator, why is the diameter of a cylindrical rotor kept less and more length as compared to a salient pole rotor? - Quora
![Figure 3 from Comparison of the vibration of 2-pole and 4-pole cylindrical- rotor alternators due to shorted -turns in the field winding | Semantic Scholar Figure 3 from Comparison of the vibration of 2-pole and 4-pole cylindrical- rotor alternators due to shorted -turns in the field winding | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/5a895d36f5e658e00a13814ba4600bb64e06fb24/2-Figure3-1.png)
Figure 3 from Comparison of the vibration of 2-pole and 4-pole cylindrical- rotor alternators due to shorted -turns in the field winding | Semantic Scholar
![Figure 5 from Comparison of the vibration of 2-pole and 4-pole cylindrical- rotor alternators due to shorted -turns in the field winding | Semantic Scholar Figure 5 from Comparison of the vibration of 2-pole and 4-pole cylindrical- rotor alternators due to shorted -turns in the field winding | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/5a895d36f5e658e00a13814ba4600bb64e06fb24/3-Figure5-1.png)