Calculate the resistance of the light globe marked X? Calculate the power transferred from the power supply. During the night, the light globe marked X breaks. Describe what happens to the brightness of of the globes marked M and N. each Problem C (Extension Only This is HARD) – Alexis and Wang-Chow have become of their simple circuits and decide to head to the dodgem cars. They two different vehicles, each of which is equipped with a motor of resistance 4.0 The overhead line Ω. supplies 240 V DC and the ground is earthed at 0 V. The upper supply line to the cars has a resistance of 0.025Ω/m The lower supply line is earthed effectively R = 0. – The circuit can be modelled as shown below: 1) Determine the ratio of Vm/Vw Determine the of (the power dissipated by each motor) 2) Pm/Pw
Calculate the resistance of the light globe marked X? Calculate the power transferred from the power supply. During the night, the light globe marked X breaks. Describe what happens to the brightness of each of the globes marked M and N. Problem C (Extension Only – This is HARD) Alexis and Wang-Chow have become of their simple circuits and decide to head to the dodgem cars. They two different vehicles, each of which is equipped with a motor of resistance 4.0 Ω. The overhead line supplies 240 V DC and the ground is earthed at 0 V. The upper supply line to the cars has a resistance of 0.025Ω/m The lower supply line is earthed – effectively R = 0. The circuit can be modelled as shown below: 1) Determine the ratio of Vm/Vw 2) Determine the of Pm/Pw (the power dissipated by each motor)
ElecPhot%20Pracs%202013%20V2.docx