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In a given DC motor, the output power is 45 HP, and the copper losses are 2.005 KW. If the rotational losses is one tenth of the output power, find the converted power and the efficiency of the motor. Select one: a. None O b. Pcony = 33.57 KW and % efficiency 89.2 % O c. Pcony = 39 KW and % efficiency 75.8 % O d. Pcony = 36.927 KW and % efficiency = 86.2 % Ps Ae Pr Ai

In a given DC motor, the output power is 45 HP, and the copper losses are 2.005 KW. If the rotational losses is one tenth of the output power, find the converted power and the efficiency of the motor. Select one: a. None O b. Pcony = 33.57 KW and % efficiency 89.2 % O c. Pcony = 39 KW and % efficiency 75.8 % O d. Pcony = 36.927 KW and % efficiency = 86.2 % Ps Ae Pr Ai

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter32: Three-phase Motors
Section: Chapter Questions
Problem 8RQ
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O c. K = 101.86 and flux =3.33 mWb / pole O d. K = 59.5 and flux = 1.33 mWb/pole In a given DC motor, the output power is 45 HP, and the copper losses are 2.005 KW. If the rotational losses is one tenth of the output power, find the converted power and the efficiency of the motor. Select one: O a. None O b. Prony = 33.57 KW and % efficiency 89.2 % O c. Pcony = 39 KW and % efficiency 75.8 % O d. Pcony = 36.927 KW and % efficiency 86.2 % Ps Ae Pr Ai
Transcribed Image Text:O c. K = 101.86 and flux =3.33 mWb / pole O d. K = 59.5 and flux = 1.33 mWb/pole In a given DC motor, the output power is 45 HP, and the copper losses are 2.005 KW. If the rotational losses is one tenth of the output power, find the converted power and the efficiency of the motor. Select one: O a. None O b. Prony = 33.57 KW and % efficiency 89.2 % O c. Pcony = 39 KW and % efficiency 75.8 % O d. Pcony = 36.927 KW and % efficiency 86.2 % Ps Ae Pr Ai
IN EHide blocks In the simple, one loop, one turn, 2-pole, DC machine: R = 0.5 Ohms, VB = 180 V, r = 0.45 m, B = 0.4 T, and the length of the conductor L = 0.9 m. Find the starting current i and the steady state speed of the loop at no-load. Magnetic Flux Commutator Segment t= 0 Brush VB e ind Select one: a. None O b. Starting Current = 360 A, Speed 555.6 rad/sec C. Starting Current = 400 A Speed = 555.6 rad/sec Speed = 373 rad/sec O d. Starting Current = 400 A, Show all 71:21 PM ENG 4/16/2021
Transcribed Image Text:IN EHide blocks In the simple, one loop, one turn, 2-pole, DC machine: R = 0.5 Ohms, VB = 180 V, r = 0.45 m, B = 0.4 T, and the length of the conductor L = 0.9 m. Find the starting current i and the steady state speed of the loop at no-load. Magnetic Flux Commutator Segment t= 0 Brush VB e ind Select one: a. None O b. Starting Current = 360 A, Speed 555.6 rad/sec C. Starting Current = 400 A Speed = 555.6 rad/sec Speed = 373 rad/sec O d. Starting Current = 400 A, Show all 71:21 PM ENG 4/16/2021
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