Constants Part A A dc motor with its rotor and field coils connected in series h

Question

Constants Part A A dc motor with its rotor and field coils connected in series has an internal resistance of 3.2 2. When running at full load on a 120-V line, the emf in the rotor is 105 V What is the current drawn by the motor from the line? Express your answer using two significant figures. Submit Request Answer Part B What is the power delivered to the motor? Express your answer using two significant figures. Submit Request Answer Part C What is the mechanical power developed by the motor? Express your answer using two significant figures. Submit Request Answer

Explanation / Answer

(A) I = (120 - 105)/R

I = 15/ 3.2

I = 4.6875 A

(B) P = V I = 562.5 Watt

(C) P = (4.6875)(105)

P = 492.2 Watt

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