No-Load Test Remove the vise grips from the machine shaft. Adjust the output of the power supply until the output voltage is 4V. Record the output current of the supply. Using the multimeter provided with the lab kit, measure the terminal voltage of the machine that is NOT connected to the supply. Repeat for supply voltages of 8V and 12V. You will use this data to estimate the rotational damping constant br of the machines. Set the output voltage and current of the power supply to zero. Output A Terminal V 4V = .5A -3.19V 8V = .59A -6.69V 12V = .67A -10.74V

Fig: 1