The electromagnet shown in the Fig. below is to be used to lift an iron slab of mass M=150 kg. The surface roughness of the iron is such that when the iron and the electromagnet are in contact, there is a minimum air gap of 0.2 mm in each leg. The electromagnet has infinite permeability and the crosssectional area Ac is 25 cm2. The number of turns of N-turn winding is 350 and the winding coil resistance is 3 Ω. Calculate the minimum coil voltage which must be used to lift the iron slab against the force of gravity. Neglect the reluctance of the iron. (Hint: Gravitational acceleration constant is 9.8 m/s2)
The electromagnet shown in the Fig. below is to be used to lift an iron slab of mass M=150 kg. The surface roughness of the iron is such that when the iron and the electromagnet are in contact, there is a minimum air gap of 0.2 mm in each leg. The electromagnet has infinite permeability and the crosssectional area Ac is 25 cm2. The number of turns of N-turn winding is 350 and the winding coil resistance is 3 Ω. Calculate the minimum coil voltage which must be used to lift the iron slab against the force of gravity. Neglect the reluctance of the iron. (Hint: Gravitational acceleration constant is 9.8 m/s2)
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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The electromagnet shown in the Fig. below is to be used to lift an iron slab of mass M=150 kg. The surface roughness of the iron is such that when the iron and the electromagnet are in contact, there is a minimum air gap of 0.2 mm in each leg. The electromagnet has infinite permeability and the crosssectional area Ac is 25 cm2. The number of turns of N-turn winding is 350 and the winding coil resistance is 3 Ω. Calculate the minimum coil voltage which must be used to lift the iron slab against the force of gravity. Neglect the reluctance of the iron.
(Hint: Gravitational acceleration constant is 9.8 m/s2)
Transcribed Image Text:N-turn
winding
Electromagnet,
cross-sectional
area A
Iron slab, mass M
Fig.1 Electromagnet lifting an iron slab
ven by:
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