7.5 Suppose that the resistive components in the DC bridge shown in Figure 7.2 have the following nominal values: R=3 km; R = 6k; R = 8 km; R = 4 k. The actual value of each resistance is related to the nominal value according to Ractual =Rnominal + OR, where OR has the following values: R,= 30; aR = -20 ; aR=40; aR3 = -50. Calculate the open circuit bridge output voltage if the bridge supply voltage Vi is 50 V. D Pu P13 A Vo R P B V