Explanation: The effect of short pitched coil is to reduce the generated EMF, and this reduction factor is cosε/2, and is referred to as coil pitch factor. 6. Which of the following equations represents the RMS value of the generated EMF in a short-pitched N-turn armature coil of an AC machine ____________
A. E = √2πkpfrNΦ
B. E = 2πkpfrNΦ
C. E = NΦωrkpsinωrt
D. none of the mentioned
Answer:A
Explanation: The effect of short pitched coil is to reduce the generated EMF, and this reduction factor is cosε/2, and is referred to as coil pitch factor. 6. Which of the following equations represents the RMS value of the generated EMF in a short-pitched N-turn armature coil of an AC machine ____________
A. E = √2πkpfrNΦ B. E = 2πkpfrNΦ C. E = NΦωrkpsinωrt D. none of the mentioned
Explanation: EMF induced = NΦωrkpsinωrt,