9.6 A 3-phase. 16-pole Alternator has 192 stator slots with 8 conductors per slot. The conductors of each phase are connected in series. The coil-span is 150 electrical degrees. If the flux per pole is 0.064 Wb sinusoidally distributed, find the phase and line values of no-load voltage, if the stator is star-connected and the required frequency is 50 Hz. [Ans : Kp = 0.966: Ka = 0.958: E = 3367: E₁ = 5830] 9.7 A 4-pole, 50 Hz, 3-phase, star-connected Alternator has 60 slots with 2 conductors per slot. The winding is short-chorded by 2 slots. If the sinusoidally distributed flux per pole is 0.062 Wb, calculate the no-load terminal voltage. [Ans : Kp = 0.973 : Ka = 0.956: E=257.54 E₁ = 446.07] 9.8 An eight pole, 3-phase, 60° phase-spread, double layer winding has 72 coils in 72 slots. The coils are short-chorded by 2 slots. Calculate the winding factors for the fundamental and the third harmonic. : [Ans Kp1 = 0.9397: Kd₁ = 0.9597: Kp3 = 0.5: Kd3 = 0.667] 9.9 Calculate the rms value of the induced emf per phase of a 10-pole, 3-phase 50 Hz Alternator with 2 slots per pole per phase and 4 conductors per slot. Coil span=150° and the flux per pole = 0.051 Wb. [Ans: 422.17]
9.6 A 3-phase. 16-pole Alternator has 192 stator slots with 8 conductors per slot. The conductors of each phase are connected in series. The coil-span is 150 electrical degrees. If the flux per pole is 0.064 Wb sinusoidally distributed, find the phase and line values of no-load voltage, if the stator is star-connected and the required frequency is 50 Hz. [Ans : Kp = 0.966: Ka = 0.958: E = 3367: E₁ = 5830] 9.7 A 4-pole, 50 Hz, 3-phase, star-connected Alternator has 60 slots with 2 conductors per slot. The winding is short-chorded by 2 slots. If the sinusoidally distributed flux per pole is 0.062 Wb, calculate the no-load terminal voltage. [Ans : Kp = 0.973 : Ka = 0.956: E=257.54 E₁ = 446.07] 9.8 An eight pole, 3-phase, 60° phase-spread, double layer winding has 72 coils in 72 slots. The coils are short-chorded by 2 slots. Calculate the winding factors for the fundamental and the third harmonic. : [Ans Kp1 = 0.9397: Kd₁ = 0.9597: Kp3 = 0.5: Kd3 = 0.667] 9.9 Calculate the rms value of the induced emf per phase of a 10-pole, 3-phase 50 Hz Alternator with 2 slots per pole per phase and 4 conductors per slot. Coil span=150° and the flux per pole = 0.051 Wb. [Ans: 422.17]
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter31: Three-phase Alternators
Section: Chapter Questions
Problem 1RQ: What conditions must be met before two alternators can be paralleled together?
Related questions
Question
![9.6 A 3-phase. 16-pole Alternator has 192 stator slots with 8 conductors per slot.
The conductors of each phase are connected in series. The coil-span is 150
electrical degrees. If the flux per pole is 0.064 Wb sinusoidally distributed, find
the phase and line values of no-load voltage, if the stator is star-connected and the
required frequency is 50 Hz.
[Ans : Kp = 0.966: Ka = 0.958: E = 3367: E₁ = 5830]
9.7 A 4-pole, 50 Hz, 3-phase, star-connected Alternator has 60 slots with 2
conductors per slot. The winding is short-chorded by 2 slots. If the sinusoidally
distributed flux per pole is 0.062 Wb, calculate the no-load terminal voltage.
[Ans : Kp = 0.973 : Ka = 0.956: E=257.54 E₁ = 446.07]
9.8 An eight pole, 3-phase, 60° phase-spread, double layer winding has 72 coils in
72 slots. The coils are short-chorded by 2 slots. Calculate the winding factors for
the fundamental and the third harmonic.
:
[Ans Kp1 = 0.9397: Kd₁ = 0.9597: Kp3 = 0.5: Kd3 = 0.667]
9.9 Calculate the rms value of the induced emf per phase of a 10-pole, 3-phase
50 Hz Alternator with 2 slots per pole per phase and 4 conductors per slot. Coil
span=150° and the flux per pole = 0.051 Wb.
[Ans: 422.17]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F86741b42-e17c-4714-b09c-fc3865337f38%2Fbb7e02da-445e-4ce9-b0b2-a13e7ad463eb%2Frq1nmr6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:9.6 A 3-phase. 16-pole Alternator has 192 stator slots with 8 conductors per slot.
The conductors of each phase are connected in series. The coil-span is 150
electrical degrees. If the flux per pole is 0.064 Wb sinusoidally distributed, find
the phase and line values of no-load voltage, if the stator is star-connected and the
required frequency is 50 Hz.
[Ans : Kp = 0.966: Ka = 0.958: E = 3367: E₁ = 5830]
9.7 A 4-pole, 50 Hz, 3-phase, star-connected Alternator has 60 slots with 2
conductors per slot. The winding is short-chorded by 2 slots. If the sinusoidally
distributed flux per pole is 0.062 Wb, calculate the no-load terminal voltage.
[Ans : Kp = 0.973 : Ka = 0.956: E=257.54 E₁ = 446.07]
9.8 An eight pole, 3-phase, 60° phase-spread, double layer winding has 72 coils in
72 slots. The coils are short-chorded by 2 slots. Calculate the winding factors for
the fundamental and the third harmonic.
:
[Ans Kp1 = 0.9397: Kd₁ = 0.9597: Kp3 = 0.5: Kd3 = 0.667]
9.9 Calculate the rms value of the induced emf per phase of a 10-pole, 3-phase
50 Hz Alternator with 2 slots per pole per phase and 4 conductors per slot. Coil
span=150° and the flux per pole = 0.051 Wb.
[Ans: 422.17]
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