The source impedance Z, = (12 + J5) Q in the circuit shown (Fig. 2). Maximum power is transforred to the load impedance when Z, is equal to Fig.2 .. ..
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- Unless given, use the: POLAR FORM for voltage and current, RECTANGULAR FORM for impedance. Consider the following circuit, supplied by a 500mARMS current source with a 30° phase shift (i.e. Isource=500230⁰ mA). R1 L1 320 mH C1 16 μF a. What is the total impedance of the circuit? b. What is the voltage drop on the 100-ohm resistor, R1? c. Is the circuit inductive, capacitive, or neither (resistive)? d. Draw the phasor diagram of the voltage and current at R1. e. What is the total power (apparent) delivered by the current source? f. Draw the phasor diagram of the voltage and current at the source. 11 sine 50 Hz 100 ell11 Consider the following circuit used to provide power for an inductive RL load. The input voltage is Vs=150V and the load has a 30 impedance value. The thyristor is working at a frequency fs = 2 kHz. The discharge current is to be limited to 50A and the required dv/dt is 50V/us. If the value of Cs is equal to 0.158µF, then the snubber losses are equal to: put of question T: T R Vs Select one: O a. 4.56W O b. 2.56W Oc. 5.45W Od. 3.56WXL=62 R1=40 Is R2=90 + + E1=100V20° AC R3=80 V3 Xc=72 ZT a. Calculate the total impedance (ZT). b. Compute the source current (Is). c. Find the current across the capacitor Xc. d. Calculate the voltage across the resistor R3. e. Find the average power delivered to the circuit (PT). f. Find the total power factor (Fp).
- Please answer quickly The impedance (Z) of a circuit is technically a phasor because it does not correspond to a sinusoidally varrying quantity. True False Resistance is varying in a circuit and does vary according to the frequency. True False "In series-connected ac circuit, the value of the equivalent admittance of the circuit is equal to the phasor sum of the reciprocal of the individual admittances. " True FalseFundamentals of Electrical Engineering 2020/2021 Dr. Yaseen H. Tahir Example: Rind the current lo in the network in Figure below. 6 kN エY 2V. V,, 12 kn V3 12 kn 6 kN Sv, 6 V Solution:bebni ghaonil (1-V mdh lleas eldong aidtsloo ab etlov sbon oors19ionnos (1- onib oi beriupon s il own bon ow(E-Vs.) asbon oerit asdowor o sonie lobo sd to sno worlomoa ti terb sion oanoups insbgobn pobrogabri onil ow st lo ono i noisu oistane ien tobianoo J enlov shon sh ani b eben +12 Aind- Supplementary Problems: 1. Three impedances (2+ j4), (3 – j5) and (1 – j3) are connected in parallel. The combination is connected in series with a coil of resistance 3 ohm and inductance 0.02 H to a 230-V, 50 Hz supply. Find (a) the complex expression for the total impedance of the circuit (b) current taken from the supply (c) power factor (d) draw a complete vector diagram showing magnitudes and phase relations of all the voltages and currents.
- Unless given, use the: POLAR FORM for voltage and current, RECTANGULAR FORM for impedance. (30pts) Consider the following circuit, supplied by a 500mARMS current source with a 30° phase shift (i.e. Isource=500230⁰ mA). R1 100 Q L1 320 mH C1 16 μF a. What is the total impedance of the circuit? b. What is the voltage drop on the 100-ohm resistor, R1? c. Is the circuit inductive, capacitive, or neither (resistive)? d. Draw the phasor diagram of the voltage and current at R1. e. What is the total power (apparent) delivered by the current source? f. Draw the phasor diagram of the voltage and current at the source. 11 sine 50 Hz ellUsing the Illustration below. Compute the total impedance (Z), the total current (I), the voltage drop across R. the voltage drop across ??, the voltage drop across ??, the true or useful power (P), the reactive power (Q) and the apparent power (S). (Answer it with a complete solution)Consider the following circuit used to provide power for an inductive RL load. The input voltage is Vs-100V and the load has a 50 impedance value. The thyristor is working at a frequency fs = 2 kHz. The discharge current is to be limited to 40A and the required dv/dt is 40V/us. If the value of Cs is equal to 0.14uF, then the snubber losses are equal to: T1 Vs Select one: O a. 3.4W O b. 1.4W 5.4W Od. 7.4W
- A 440Vrms, 60-Hz source supplies two loads connected in parallel : Load 1(L1): 12 kVA, 0.70 pf lagging Load2 (L2): 10 kVA, 0.80 pf lagging (a) Find the p.f. of the parallel combination. (b) Calculate the capacitance connected in parallel that will raise the power factor to unity.A voltage of 10020° V(rms) is across an impedance of 5 + j2 №. a) What type of impedance is this (capacitive, inductive, or purely resistive)? b) Determine the current in the circuit; c) Draw the phasor diagram showing voltage and current; what is the phase relationship between current and voltage? Is this consistent with your answer to part a)? d) Determine the apparent, real, and reactive power delivered to the load; draw the power triangle; what is the power factor angle? What is the power factor (don't forget to include leading/lagging)?Given the circuit shown, answer the following questions I 20 ww 80 I3 Vs = 24/60° v E V1 j6n V2+ -j4 n one of the following statements is correct: Choose... 12 in Ampere equals to: Choose... the equivalent impedance in Ohm of the circuit is Choose... V2 in Volts equals to: Choose...