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A 200V, 2000 rpm, 10A, separately excited DC motor has an armature resistance of 1.05 ohms. Rated DC voltage is applied to both armature and field winding of the motor. If the armature draws 5.2A from the source, calculate the torque developed in the motor (in Nm). ?
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A 200V, 2000 rpm, 10A, separately excited DC motor has an armature res...
Calculation of Torque Developed in Separately Excited DC Motor


Given Parameters


  • DC voltage (V) = 200V

  • Motor speed (N) = 2000 rpm

  • Armature current (Ia) = 5.2A

  • Armature resistance (Ra) = 1.05 ohms

  • Field current (If) = 10A



Calculation of Back EMF (Eb)

Back EMF (Eb) is given by the following formula:

Eb = V - Ia * Ra

Substituting the given values in the above formula, we get:

Eb = 200 - 5.2 * 1.05

Eb = 194.94V


Calculation of Torque (T)

Torque (T) is given by the following formula:

T = (Eb / N) * (If / Ra)

Substituting the given values in the above formula, we get:

T = (194.94 / (2000/60)) * (10 / 1.05)

T = 11.27 Nm


Explanation

The torque developed in a separately excited DC motor is proportional to the product of back EMF and field current, and inversely proportional to the armature resistance and speed of the motor. In this problem, we have calculated the back EMF from the given DC voltage and armature current. Using the back EMF, we have calculated the torque developed in the motor using the above formula.
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A 200V, 2000 rpm, 10A, separately excited DC motor has an armature resistance of 1.05 ohms. Rated DC voltage is applied to both armature and field winding of the motor. If the armature draws 5.2A from the source, calculate the torque developed in the motor (in Nm). ?
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A 200V, 2000 rpm, 10A, separately excited DC motor has an armature resistance of 1.05 ohms. Rated DC voltage is applied to both armature and field winding of the motor. If the armature draws 5.2A from the source, calculate the torque developed in the motor (in Nm). ? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A 200V, 2000 rpm, 10A, separately excited DC motor has an armature resistance of 1.05 ohms. Rated DC voltage is applied to both armature and field winding of the motor. If the armature draws 5.2A from the source, calculate the torque developed in the motor (in Nm). ? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 200V, 2000 rpm, 10A, separately excited DC motor has an armature resistance of 1.05 ohms. Rated DC voltage is applied to both armature and field winding of the motor. If the armature draws 5.2A from the source, calculate the torque developed in the motor (in Nm). ?.
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