2. The flux density distribution in the air-gap of a 50 Hz alternator is given by B = Blm sine (Blm/3) sin 30. The armature winding, which can be assumed to be uniformly distributed, is a 3-phase, full-pitched winding with 120 turns per phase. If the total flux per pole is 0.1 Wb, calculate the rms value of the emf per phase and the form factor of the phase emf. (The form factor Kris defined as: K₁ = = E E Π = 2√2 √ E² + E² + E²² +... E3 Esay Elay + + 3 +... 5 √E² + E² + E²²+.... E₁ E 3 5 " where Ek is the rms emf of the kth harmonics.)
2. The flux density distribution in the air-gap of a 50 Hz alternator is given by B = Blm sine (Blm/3) sin 30. The armature winding, which can be assumed to be uniformly distributed, is a 3-phase, full-pitched winding with 120 turns per phase. If the total flux per pole is 0.1 Wb, calculate the rms value of the emf per phase and the form factor of the phase emf. (The form factor Kris defined as: K₁ = = E E Π = 2√2 √ E² + E² + E²² +... E3 Esay Elay + + 3 +... 5 √E² + E² + E²²+.... E₁ E 3 5 " where Ek is the rms emf of the kth harmonics.)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Question
The flux density distribution in the air-gap of a 50 Hz alternator is given by the expression B=B1msinθ+(B1m/3)sin3θ. The armature winding, which can be assumed to be uniformly distributed, is a 3-phase, narrow-spread, full-pitched winding with 120 turns per phase. If the total flux per pole is 0.1 Wb, calculate the rms value of the emf per phase and the form factor of the phase emf. (2345 V,1.06)
Transcribed Image Text:2. The flux density distribution in the air-gap of a 50 Hz alternator is given by
B = Blm sine (Blm/3) sin 30.
The armature winding, which can be assumed to be uniformly distributed, is a 3-phase,
full-pitched winding with 120 turns per phase. If the total flux per pole is 0.1 Wb,
calculate the rms value of the emf per phase and the form factor of the phase emf.
(The form factor Kris defined as:
K₁
=
=
E
E
Π
=
2√2
√ E² + E² + E²² +...
E3 Esay
Elay + +
3
+...
5
√E² + E² + E²²+....
E₁ E
3 5
"
where Ek is the rms emf of the kth harmonics.)
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