3. Calculate the reactance voltage for a machine having the following particulars. Number of commuters segments = 55, revolutions per minute= 900, brush width in commutator segments = 1.74, coefficient of self induction= 153 x 106 henry, current per coil= 27 A.

3. Calculate the reactance voltage for a machine having the following particulars. Number of commuters segments = 55, revolutions per minute= 900, brush width in commutator segments = 1.74, coefficient of self induction= 153 x 106 henry, current per coil= 27 A.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 18SQ

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A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.

Question

Our subject is ELECTRICAL MACHINE 1

3. Calculate the reactance voltage for a machine having the following
particulars.
Number of commuters segments = 55,
revolutions per minute= 900,
brush width in commutator segments = 1.74,
coefficient of self induction= 153 x 106 henry,
current per coil= 27 A.

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Calculate the reactance voltage for a machine which runs at 900rpm number of commutator segments is 65, brush width is 1.74 (in commutator segments), coefficient of self induction is 153 the conductor current is 27A.