Answer Happy

Question 4 (1 point) A steadily running electric motor is powered by a single-phase AC power supplied at 120 V (RMS). The electric current = 12.8 A, and power-factor = 0.78. The rotor torque is 4.95 N·m and rotor speed = 182 rad/s. Wel 700 W The motor electric power is closest to which of the following choices? 800 W 900 W 1000 W 1100 W 1200 W ė 1300 W Wsh
Question 5 (1 point) Consider the design of a lighting system by the Lumen Method. To account for the effects of source lumen depreciation, a designer would be most likely to adjust which of the following values in their calculation? RCR Pw O Xd OLLF E O A
Question 7 (1 point) An electric motor cycles between on and off as controlled by an automated system. When powered on, the motor delivers shaft power of 3,048 W and requires electric input power of 3,610 W. When switched off, its power consumption is 0 W. During a time period of 253 hours the total electricity use of the motor is measured to be 168 kWh. What was the total run-time (hours) of the motor during this period? (Round your answer to one decimal place.) Your Answer: Answer