24. Determine VR1, R2, and R3 in Figure 72. R1 R1 65.8 mA 21.7 V 14.5 V 82 0 12 V R. 6.58 V R4 R3 12.3 mA 2.21 V 30.9 V FIGURE 71 FIGURE 72 SERIES CIRCUITS 25. For the circuit in Figure 73 the meter reads 7.84 mA when the switch is in position A. (a) What is the resistance of R4? (b) What should be the meter reading for switch positions B, C, and D? (c) Will a 4 A fuse blow in any position of the switch?

Consider a step down converter supplied by a DC power source of magnitude Vs = 220 V. The switching period is 0.1 ms and the duty cycle k is set to 0.5. The load is an inductive load with R=5 Ohms and L=10 mH. The switch is ideal. The RMS converter current IR is equal to 15.56A. The ripple factor of the input current RFs would be equal to: Select one: a. 0% Ob. 50% Oc. 100% d. None of these

bläs 6 Q3: Calculate voltages between points A,D (V1) and between points B,C (V2) before and after closing switch S A 3 B 15V D S 12 C

3-Determine the output voltage in Figure 8 for each of the following failure modes: (a) L1 open (b) L2 open (c) R1 open (d) a short across R2 5 V 1 MHz L₁ m 8.0 μΗ L₂ m 4.0 με Figure 8 R₁ ww 100 (2 R₂ 100 Ω R3 56 Ω

Bonus Question. From the meter readings in Figure X, determine the most likely problem. State how you could quickly isolate the exact location of the problem. 115 Vrms 1:1 ooooo relele 115 DMMI Figure X D₁ D₁ 103 V de DMM2 100 μF RL * 10 ΚΩ V de DMM3