We know, Kd=(sin(qγ/2))/qsin(γ/2), here q=48/4∗3 = 4 ⇒ Kd=0.957662. 3. A 3-phase, 4-pole alternator has 48 stator slots carrying a 3-phase distributed winding. Each coil of the winding is short chorded by one slot pitch. The winding factor is given by ______________
A. (cos7.5)/16
B. (cot7.5)/8
C. 1/(8sin7.5)
D. (cot7.5)/16
Answer:A
We know, Kd=(sin(qγ/2))/qsin(γ/2), here q=48/4∗3 = 4 ⇒ Kd=0.957662. 3. A 3-phase, 4-pole alternator has 48 stator slots carrying a 3-phase distributed winding. Each coil of the winding is short chorded by one slot pitch. The winding factor is given by ______________
A. (cos7.5)/16 B. (cot7.5)/8 C. 1/(8sin7.5) D. (cot7.5)/16
Explanation: Slots per pole= 48/4 =12 ⇒ γ=180/12=15° and q=48/4&lowest;3=4