A DC motor delivers power to a load at a speed of 1500.0 r/min. The armature current drawn by the motor is Ia = 130 A. The armature circuit resistance of the motor is R = 0.1 Ω and total losses are Pf = 400 W. On the motor nameplate it says U = 280 V and P = 2850.0 W. a) Determine the power developed in the rotor: b) Determine the mechanical power delivered by the engine: c) Determine the load torque at the specified load: d) What is the efficiency of the engine:
A DC motor delivers power to a load at a speed of 1500.0 r/min. The armature current drawn by the motor is Ia = 130 A. The armature circuit resistance of the motor is R = 0.1 Ω and total losses are Pf = 400 W. On the motor nameplate it says U = 280 V and P = 2850.0 W. a) Determine the power developed in the rotor: b) Determine the mechanical power delivered by the engine: c) Determine the load torque at the specified load: d) What is the efficiency of the engine:
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter31: Faraday’s Law
Section: Chapter Questions
Problem 31.48P: A motor in normal operation carries a direct current of 0.850 A when connected to a 120-V power...
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A DC motor delivers power to a load at a speed of 1500.0 r/min. The armature current drawn by the motor is Ia = 130 A. The armature circuit resistance of the motor is R = 0.1 Ω and total losses are Pf = 400 W. On the motor nameplate it says U = 280 V and P = 2850.0 W. a) Determine the power developed in the rotor: b) Determine the mechanical power delivered by the engine: c) Determine the load torque at the specified load: d) What is the efficiency of the engine:
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