2. A series RL circuit has voltage and current equations of e = 141.42 sin 2n30t + 141.42 sin 2n90t volts and i = 9.8 sin (2n30t - 30°) + 5.66 sin (2n90t - 60°) amperes. Determine the inductance L. A. 92.5 mH B. 38.3 mH C. 27.22 mH D. 83.49 mH
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- 2-A resultant current is made of two components: a 10 A D.C. component and a sinusoidal component of maximum value 14.14. The average value of the resultant current is amperes (a) 0 (b) 24.14 (c) 10 (d) 4.14 and r.m.s. value is - amperes (e) 10 (f) 14.14 (g) 24.14 (h) 100Shown in the figure below is an "RC" circuit drive by an AC power source. The AC power source has an RMS voltage of Vps (RMS) = 11.58 Volts and is running at a frequency of f = 1.326e+04 Hz. resistor has a resistance of R = 3750 2 and the capacitor has an capacitance of C = 3.17e-09 Farads. Vps R ww Write the FORMULA for the total impedance of the circuit Ztot = Write the FORMULA for the phase of the total impedance of the circuit tot = Determine the numerical value of Ztot = Determine the numerical value of Pztot= Determine the current through the circuit: • I(PEAK) = • I(RMS) = Determine the voltage across the resistor: Amps Amps S2 C degreesWhat is the value of capacitance if the capacitive reactance is 50 Q .Assume frequency of supply as 50 Hz ? a. 53.3x10-5 F O b. 5.3x10-5 F c. 6.36x10-5 E d. 63.3x10-5 F
- QUESTION 50 RG180B/U is a coaxial cable with a nominal impedance of 95 02 and a capacitance per foot of 15.5 pF/ foot. Determine the inductance per foot of this cable. O a. 140 nH/ft Ob.45 nH/ft O c. 95 nH/ft O d.250 nH/ftShown in the figure below is an "RL" circuit drive by an AC power source. The AC power source has an RMS voltage of Vps (RMS) = 9.84 Volts and is running at a frequency of f = 8.585e+04 Hz. The resistor has a resistance of R = 2170 and the inductor has an inductance of L = 3.54e-03 Henries. Vps R ww Write the FORMULA for the total impedance of the circuit Ztot = Determine the numerical value of Ztot = 2890.5 Determine the numerical value of $z= = 41 Determine the current through the circuit: • I(PEAK) = 4.81E-3 • I(RMS) = 3.404E-3 Determine the voltage across the resistor: • VR(PEAK) = 7.387 • VR(RMS) = 5.22 ✔✔ Amps ✔Amps Write the FORMULA for the phase of the total impedance of the circuit z... = | tan-1 2701 R x Volts X Volts Determine the voltage across the inductor: • VL(PEAK) = 9.184 • VL(RMS) = 6.49 ✔ Volts Volts L R²+ WL- ✔ degrees 2 If a second circuit were connected in parallel with the inductor, this circuit would be considered as: O a low-pass filter O a capacitive switcher…A utility company plans to connect a total of 20uF of capacitance to a 7200 volt line. To make this connection four capacitors will be connected in series. What is the capacitance of each capacitor? Answer is 80uF. Now what is the minimum AC voltage rating of each capacitor?
- "If lab is equal to 595.8252306 and lb is 344296, the phase sequence is:" O POSITIVE O NEGATIVE58. Two capacitors, a 20 µF and a 30 µF, are connected in series to a 60-Hz source. What is the total capacitive reactance? a. 117.96 N b. 221.04 N c. 253.05 N d. 333.16 NSINUSADAL ALTER UATING SIDES 5CM 471t is APPUED TO A H. 5cm IS WOUND HTH 300 TU IN 3.) A SINUSODAL ALTERUATING SINUSADAL ALTERNATING VOLTAGE HAC N C.m.s VALUE OF 200 V FREQUENCY OF so Hz. IT THE ZERO AXIS IN A CROSSES POSITIVE DIRECTION KHEN t=0. DETERMINE li) THE TIME WHEN VOLTAGE FIRST REACHES THF STANTANEOUS VUE OF 2wY AND (i) THE TME HEN KOUAGE LETER PASSING THROUGH Ts MAXIMUM POSITIVE YALUE REACHES THE VALUE 11141.4 V. (0.0025 SELOND (ii) 1/300 SECOND) OF 200 SN 47 E iS APPUED TO A HW AN ALTEFNSTNG VOLTAGE SEPIES VITH A KRISTANE OF 40 2.IF THE
- The ripple factor for pure dc is Answer:When a resistor is connected across the terminals of an ac generator (117 V) that has a fixed frequency, there is a current of 0.332 A in the resistor. When an inductor is connected across the terminals of the same generator, there is a current of 0.365 A in the inductor. When both the resistor and the inductor are connected in series between the terminals of this generator, what is (a) the impedance of the series combination and (b) the phase angle between the current and the voltage of the generator? Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise. (a) Number (b) Number Buda i Vrms R Irms.R Circuit 1 Units Units Vrms. Irms, L Circuit 2 > L Vrms R www Circuit 3A 220 Ω resistor is in series with an 80 mH inductor. The AC source is 48 at 1 kHz. The power factor is ________. Hint: Draw the circuit and get Vs and Is