A motor in normal operation carries a direct current of 0.840 A when connected to a 120 V power supply. The resistance in the motor windings is 19.2 2. Determine the following values. (a) While in normal operation, what is the back emf generated by the motor? (b) While in normal operation, at what rate is internal energy produced in the windings? w (c) What If? Suppose that a malfunction stops the motor shaft from rotating. At what rate will internal energy be produced in the windings in this case? (Most motors have a thermal switch that will turn off the motor to prevent overheating when this occurs.) kw Additional Materials
A motor in normal operation carries a direct current of 0.840 A when connected to a 120 V power supply. The resistance in the motor windings is 19.2 2. Determine the following values. (a) While in normal operation, what is the back emf generated by the motor? (b) While in normal operation, at what rate is internal energy produced in the windings? w (c) What If? Suppose that a malfunction stops the motor shaft from rotating. At what rate will internal energy be produced in the windings in this case? (Most motors have a thermal switch that will turn off the motor to prevent overheating when this occurs.) kw Additional Materials
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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![**Motor Operation and Energy Production**
A motor in normal operation carries a direct current of 0.840 A when connected to a 120 V power supply. The resistance in the motor windings is 19.2 Ω. Determine the following values:
(a) **While in normal operation, what is the back emf generated by the motor?**
\(\text{_____ V}\)
(b) **While in normal operation, at what rate is internal energy produced in the windings?**
\(\text{_____ W}\)
(c) **What If?** Suppose that a malfunction stops the motor shaft from rotating. At what rate will internal energy be produced in the windings in this case? (Most motors have a thermal switch that will turn off the motor to prevent overheating when this occurs.)
\(\text{_____ kW}\)
---
**Additional Materials**
- [Section for additional resources or supplementary materials could be included here]
This text is useful for understanding electricity flow in motors and calculating important values related to energy production and safety features in motor operations.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F65e8876c-9cfb-4d00-b5f3-6286bfdc9996%2Fd1e2935e-1174-466d-982e-83426a1e5686%2F06ceu8b_processed.png&w=3840&q=75)
Transcribed Image Text:**Motor Operation and Energy Production**
A motor in normal operation carries a direct current of 0.840 A when connected to a 120 V power supply. The resistance in the motor windings is 19.2 Ω. Determine the following values:
(a) **While in normal operation, what is the back emf generated by the motor?**
\(\text{_____ V}\)
(b) **While in normal operation, at what rate is internal energy produced in the windings?**
\(\text{_____ W}\)
(c) **What If?** Suppose that a malfunction stops the motor shaft from rotating. At what rate will internal energy be produced in the windings in this case? (Most motors have a thermal switch that will turn off the motor to prevent overheating when this occurs.)
\(\text{_____ kW}\)
---
**Additional Materials**
- [Section for additional resources or supplementary materials could be included here]
This text is useful for understanding electricity flow in motors and calculating important values related to energy production and safety features in motor operations.
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