In the circuit in figure 4 (R = 1, C = 1.5 μF, 2.3 V), = the switch is initially open. How long does it take to charge the capacitor to 60% after the switch is closed? A. 0.38 μs B. 0.77 μs C. 1.37 μs D. 1.53 us ω Figure 4 R C
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- You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?Which of the following is not a requirement for an electric circuit? a. a source b. a path c. a load d. a signal light
- You are an electrician working in an industrial plant. You discover that the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-volt AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 mF and a voltage rating of 240 VAC. The only 10-mF AC capacitor in the storeroom is marked with a voltage rating of 350 WVDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.1. 1-5 K 30v a. what is tue T CTime constant) ? b. How long will it take for the capacutor TO rtach s0% op charge? C. What is tne voltage of capa citor apter 1 seconds? d. How many tíme constants will it take for the soltage to reach 23 v? C. Gweng that the capacitor is fully changed, how will it take por it to be 20% ? long 120v + BF what is the. T ? b. what is the voltage capacitor apter 10 sec? a. C. How many time constants will it take for Tue Vo Itage to reach 80 v.? d. Given that the capaator is Fully charged, how time constants will it be to reau many GOV!* For the Photoflash unit, R1=5KQ, C=1500 uf R2= 120. The time required for the capacitor to fully charge is High voltage dc supply R₁ 1 2 R₂ C 32 SO O 30.5 S 37.5 S 50 S 60 S O
- With V1, voltage peak to peak is 10 volts, R1=200 Ohm, R2=1000 Ohm and C1= 300 nF. Find Vx, voltage across the the capacitor, C1 and R2 when the frequency is 1000 Hz and 10000 Hz1. Which of the following answers best describes discontinuous conduction mode? A. The inductor voltage ripple goes negative B. The inductor current ripple stays positive C. The inductor current ripple falls to zero D. The output current ripple falls to zeroIn the following circuit the diodes are 0.7 constant voltage model 10V Select one: C. m 10K a. None of the answers b. 2 diodes are reversely biased the 10K resistor can not have currents d. 2 diodes are forwardly biased
- Q3/ a/ What is the function of the inductance L in a single phase halfwave thyristor? b/ A controlled full wave bridge rectifier has a source of 50 Sinwt with R = 10 and L = 20 mH find the d.c load current if a = 40° , then draw Vo and lo use %3D %3D 50 Hz freq. and ß = 1.1n2:50 1 LTE O Motor Warning Light Instructions PHYS&110-VHY-S21-PHYSNON-SCIMAJORSWLAB-.. STEP 3 Now add a red LED (D1 in the main schematic) in series with 500N of resistance (shown as R1 in the main schematic). How you choose to arrive at 5002 is up to you. SW1 PSB D2 D3 1N4007 5 V D1 Blue Red R3 10 ka R1 500 Q • What happens now when SW1 is (and the PSB is turned on)? • What happens if you turn the diode at D3 around? (Don't forget to turn it back the right way afterward.) • Why does this circuit use a diode at D3 instead of a pull-up resistor? (Meaning, what would happen if a resistor were used instead of the diode?) pressed ( Previous Next 14 Dashboard Calendar To Do Notifications InboxWhat should I do when I get a current like 0.263187845A, should I round into the simplest form, or keep it and convert into mA?