Explanation: Belt factor or distribution factor or breadth factor = kd= phasor sum of coil EMFs/arithmetic sum of coil EMFs. 6. The armature winding of a 2-pole, 3-phase alternator for each phase is distributed in a number of slots per phase. The RMS value of the voltage per phase is less than the RMS value of the voltage per coil multiplied by the number of coils in series because the
A. RMS value of the voltage in different coils of the phase is different
B. equal RMS voltages in different coils of the phase has mutual phase difference
C. maximum value of the induced voltage in different coils of the phase are different
D. different coils of the phase pass through different saturated regions of the magnetic circuit
Answer:A
Explanation: Belt factor or distribution factor or breadth factor = kd= phasor sum of coil EMFs/arithmetic sum of coil EMFs. 6. The armature winding of a 2-pole, 3-phase alternator for each phase is distributed in a number of slots per phase. The RMS value of the voltage per phase is less than the RMS value of the voltage per coil multiplied by the number of coils in series because the
A. RMS value of the voltage in different coils of the phase is different B. equal RMS voltages in different coils of the phase has mutual phase difference C. maximum value of the induced voltage in different coils of the phase are different D. different coils of the phase pass through different saturated regions of the magnetic circuit
Explanation: The phase displacement will be given by slot angular pitch γ. 7. A 3-phase machine has integral slot winding with fundamental distribution factor kd1, the distribution factor for nth harmonic kdn is ____________