A small permanent-magnet DC motor has an armature resistance of 3.5 2, and armature voltage of 7 V, the motor achieved a no-load speed of 11, 500 r/min while drawing an armature current of 15 mA. Determine the motor torque constant K (V/(rad/sec). a) 4.21mV/(rad/sec) b) 5.77 mV/(rad/sec) c) 5.23 mV/(rad/sec) d) 8 mV/(rad/sec)
A small permanent-magnet DC motor has an armature resistance of 3.5 2, and armature voltage of 7 V, the motor achieved a no-load speed of 11, 500 r/min while drawing an armature current of 15 mA. Determine the motor torque constant K (V/(rad/sec). a) 4.21mV/(rad/sec) b) 5.77 mV/(rad/sec) c) 5.23 mV/(rad/sec) d) 8 mV/(rad/sec)
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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You are attempting question 1 out of 12
A small permanent-magnet DC motor has an armature resistance of 3.5 2, and armature
voltage of 7 V, the motor achieved a no-load speed of 11, 500 r/min while drawing an
armature current of 15 mA. Determine the motor torque constant K (V/(rad/sec)).
a) 4.21 mV/(rad/sec)
b) 5.77 mV/(rad/sec)
c) 5.23 mV/(rad/sec)
d) 8 mV/(rad/sec)
swer
O A
OB
OC](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4994cc5c-4cb0-41e4-959c-76b2079a8de6%2F3e109e40-0afb-478d-89f3-47bfe36e6d54%2Fgakcm3m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Hote:-
You are attempting question 1 out of 12
A small permanent-magnet DC motor has an armature resistance of 3.5 2, and armature
voltage of 7 V, the motor achieved a no-load speed of 11, 500 r/min while drawing an
armature current of 15 mA. Determine the motor torque constant K (V/(rad/sec)).
a) 4.21 mV/(rad/sec)
b) 5.77 mV/(rad/sec)
c) 5.23 mV/(rad/sec)
d) 8 mV/(rad/sec)
swer
O A
OB
OC
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