Answer Happy

0 4. a. Couple the motor to the electrodynamometer with the timing belt b. Set the dynamometer control knob at its full ccw position. ^ 0.3 0.6 0.9 c. Repeat procedures 3 for each of the torques listed in Table 5-1, maintaining the input voltage at 415 V ac. TORQUE (N-m) 0 1.2 d. Retum the voltage to zero and turn off the power supply. V External Roter Resistance, Rext=0f2 h h (amps) (amps) (amps) 0.25 0.28 0.30 0.30 0.42 0.56 0.57 55 0.66 0.66 0.68 80 REVIEW QUESTIONS 0.29 0.32 -8 0.41 0.48 27 0.551 Dala table when Rotor external Rext = 0 b) apparent power c) active power W, (watts) -25 Table 6-1. d) reactive power e) power factor SPEED (r/min) W₂ (watts) 75 90 120 50 1801227 1461 1418 1369 1. Using the results of Table 5-1, calculate the no-load characteristics of the wound-rotor motor. a) average current resistance 5-3 When Rext=02 Torque = ON-/m₂ A ac VA W var