Consider the following statements :
1. Salient pole alternators have small diameters and large axial lengths.
2. Cylindrical rotor alternators have a distributed winding.
3. Cylindrical rotor alternators are wound for large number of poles.
4. Salient pole alternators run at speeds slower than cylindrical rotor machines.
Which of the above statements are correct ?
(a) 1 and 3 only (b) 2 and 4 only (c) 1 and 4 only (d) 2 and 3 only