Consider a series DC motor with armature resistance of 2.5Ohms and a field resistance of 4.5Ohms, excited by a 300VDC supply. (a) The motor produces an armature current of 10A at 27rad/s at steady-state. What is the starting torque when started from the 300VDC supply? (b) Find the necessary resistance that should be added to limit the armature current to18A (c) Assume that a constant torque load of 110Nm is connected to the motor, without the additional armature resistance of part (b), what will be motor speed at steadystate?
Consider a series DC motor with armature resistance of 2.5Ohms and a field resistance of 4.5Ohms, excited by a 300VDC supply. (a) The motor produces an armature current of 10A at 27rad/s at steady-state. What is the starting torque when started from the 300VDC supply? (b) Find the necessary resistance that should be added to limit the armature current to18A (c) Assume that a constant torque load of 110Nm is connected to the motor, without the additional armature resistance of part (b), what will be motor speed at steadystate?
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ISBN:9780133923605
Author:Robert L. Boylestad
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Consider a series DC motor with armature resistance of 2.5Ohms and a field resistance of
4.5Ohms, excited by a 300VDC supply.
(a) The motor produces an armature current of 10A at 27rad/s at steady-state. What is
the starting torque when started from the 300VDC supply?
(b) Find the necessary resistance that should be added to limit the armature current to18A
(c) Assume that a constant torque load of 110Nm is connected to the motor, without
the additional armature resistance of part (b), what will be motor speed at steadystate?
(d) With the additional armature resistance, what is the motor speed at steady-state?
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