Calculating Back EMF: 200V DC Motor w/ 20A, 0.3Ω Resistance

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SUMMARY

The discussion focuses on calculating the back electromotive force (EMF) for a 200V DC motor with a current of 20A and an armature resistance of 0.3Ω. The key equation used is Kirchhoff's Voltage Law (KVL), which allows for the determination of back EMF by subtracting the voltage drop across the armature from the supply voltage. The calculated back EMF is essential for understanding motor performance and efficiency.

PREREQUISITES
  • Understanding of Kirchhoff's Voltage Law (KVL)
  • Basic knowledge of DC motor operation
  • Familiarity with Ohm's Law
  • Concept of back EMF in electrical circuits
NEXT STEPS
  • Study the application of Kirchhoff's Voltage Law in electrical circuits
  • Learn about the characteristics and performance metrics of DC motors
  • Explore the effects of armature resistance on motor efficiency
  • Investigate advanced motor control techniques and their impact on back EMF
USEFUL FOR

Electrical engineers, students studying motor control systems, and anyone involved in the design or analysis of DC motors will benefit from this discussion.

jaykc1
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Homework Statement



i have a 200v dc motor with 20A flowing through the armature with a resistance of 0.3Ω, how do i calculate the back emf? very confussed :(

Homework Equations





The Attempt at a Solution

 
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Thanks for your help, not so confussed now :)
 

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