Q3 In the circuit shown in the figure below, if the continuous resistance of the coil is 45 ohm and the maximum voltage on both ends of the secondary winding is equal to 30.7 V, calculate the rated voltage and current measured by the load resistance methods (assuming that the diaphragm voltage of the diode is equal to 0.5 v) 8588856856 eeeeeeeeee SH 250 pF 750 2
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- Phase Angle. An LRC circuit has the following parameters: X₁ = 5N, Xc = 3N, and R= 20. Which of the following diagrams best represents the phasors of the current and source voltage of the LRC circuit at a certain point in time? V V V 45° A 90° с O A. Voltage leads current by 45° B. Current leads voltage by 45° C. Voltage leads current by 90° D. Current leads voltage by 90° 45° B 90° D VCurrent in a closed RL circuit How many seconds after theswitch in an RL circuit is closed will it take the current i to reachhalf of its steady-state value? Notice that the time depends on Rand L and not on how much voltage is appliedVoltage The electrical voltage from a standard wall outlet is given as a function of time t by V(t) = 170 sin(120 mt). This is an example of alternating current, which is electric- ity that reverses direction at regular intervals. The common method for measuring the level of voltage from an alternating current is the root mean square, which is given by Root mean square = P (1);^"S| T where T is one period of the current. (a) Verify that T = 1/60 second for V(t) given above. (b) You may have seen that the voltage from a standard wall outlet is 120 volts. Verify that this is the root mean square value for V(t) given above. (Hìnt: Use the trigo- nometric identity sin? x = (1 – cos 2x)/2. This identity can be derived by letting y = x in the basic identity for cos(x + y), and then eliminating cos? x by using the iden- tity cos x = 1 - sin x.)
- Given a series circuit with total voltage of 15, R1 = 7 Q, R2 = 4 Q, and R3 = 2 Q. %3D Find the 12.A series RL circuit with R = 19 0, and L = 6 H has a constant voltage E = 150 V applied att = 0 by the closing of a switch. R E t =0 Find the time at which VR = VL. elleI don't understand why Rint is in series with Req. I feel like they are in parallel after you've reduced the circuit. Is that because of the junction?
- In the circuit given below, ww wn A) When the switch is in position 2 at t = 1 second, the current (Ic) and voltage (Vc) in the capacitor depend on Find the mathematical expression. B) What is the capacitor current (Ic) and voltage (Vc) at t = 2t seconds. C) If the switch is set to position 2 at t = 2t ', it is necessary for the time dependent change of voltage (Vc) across the capacitor. Find the mathematical expression. D) Draw the time-dependent waveform of the voltage determined for the wwwm conditions in items A, B and C. w w ic 4 mA + 5 kΩ R2 R 10 μFυc 1 kN R3 3 kΩDischarging Capacitor: Kirchoff's loop rule applied to the discharging capacitor circuit gives Q ΣAV₁ = loop = IR- = 0 The current is leaving the positive plate so I = -dQ/dt = -CdAVc/dt. Substituting this into loop rule gives a differential equation for Q(t): RC + AVc = 0 dAvc dt This is the simplest differential equation you will learn in your differential equations class. The solution for the differential equation for AVC (t) is an exponential: R www C AV (t) = AV e-t/(RC) (discharging) where AV, is the voltage across the capacitor when discharge begins (t = 0). The quantity Tc = RC has dimensions of time and is called the time constant of the circuit. It describes how long it takes for the capacitor to charge or discharge. 2. Show that a ohm farad is the same as a second. Show steps.A series RL circuit with R = 25 Q, and L = 7H has a constant voltage E = 136 V applied at t = 0 by the closing of a switch. R t= 0 Find the current when t -8 . Note: Report fnal answer in 3 decimal places. E.
- In an A.C. circuit, if the impedance is 500 ohm and reactance is 400 ohm, the resistance of the resistor is: O a 100 ohm O b. 300 ohm O . 900 ohm O d. 640.3 ohmExplain why the current is the same in all parts of a series circuit. Further, de- scribe why the IR drops are zero in an open series resistive circuit.A series RL circuit with L = 3.20H and a series RC circuit with C = 4.00 uF have equal timne constants. The two circuits contain the same resistance R. %3D (a) What is the value of R? (b) What is the time constant? ms Submit Answer