Concept explainers
The Thé venin equivalent network seen by a load
a. The value of
b. The power
c. The efficiency
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Principles and Applications of Electrical Engineering
- Using the figure be below, a) Calculate P3 (in W). and b) Find the total power (in W) supplied by the source.arrow_forwardDetermine, using superposition, the voltage acrossR in the circuit of Figure P3.41.IB = 12 A RB = 1 ΩVG = 12 V RG = 0.3 ΩR = 0.23 Ωarrow_forwardQ.3: Determine the total equivalent resistance at point a-b for the circuit in Figure Q.3. 340 250 1800 150 250 DC 600 60n 1800arrow_forward
- Using KCL, perform node analysis on the circuitshown in Figure P3.24, and determine the voltageacross R4. Note that one source is a controlled voltagesource! Let VS = 5 V; AV = 70; R1 = 2.2 kΩ;R2 = 1.8 kΩ; R3 = 6.8 kΩ; R4 = 220Ωarrow_forwardSolve by ohm's law or Kirchhoff's law's Q3: For the circuit shown in the figure. a. Detemime the currents I, I,. b. Find the voltage V, across the 202 resistor. c. Detemine the dissipated power across the 52 resistor I 50 I-A 500V V, 202 51 O Shot by Hisense H12arrow_forwardFor the following figure (3.7): the bridge circuit in the figure is in equilibrium when R1 = 100 Ohms, R2 = 1000 Ohms, and R3 = 150 Ohms. The circuit has a voltage source of 5 V DC. Determine the value of the resistance Rx.arrow_forward
- 3.40 Find Vi and V in the circuit shown in Figure P340. FIGURE P3.40 2 kn R2 V2 4 kn 2000 i 5 V 3 kn 2.5 k 45arrow_forwardThe equivalent circuit of Figure P3.73 hasVT = 35 V RT = 600Ω If the conditions for maximum power transfer exist,determinea. The value of RL.b. The power developed in RL.c. The efficiency of the circuitarrow_forwardFind the values of vs,v₁,and i2 in the figure below. 40 Q www www 2002. +51 2'|| | 20 Q 1₂ 5Q I + 4 Aarrow_forward
- Question 3 (a) Briefly explain what is the per-unit systero. (b) A resistance of 60n is selected as the base resistance in a circuit consists of three resistors. If R, =1002, R, =30002 and %3D R, = 200 calculate the per-unit vahue of each resistance. %3D (c) A power of, P-25KW and a voltage of, E-2400V are selected as the base power and base voltage of a power system respectively. Calculate the value of the base impedance, Z, and the base current, I,. (d) A resistor bas a per-nnit value of 5.3. Given the base power is P=250KW, and the base voltage is E,-12470V, calculate the ohmic value (actual value) of the resistor. (e) A 4000 resistor caries a cucrent of 60A. Given the base valne of voltage, E, 4KV, the base value of power, P, 500KTF, the base value of current, I, =125.4, and the base value of resistor, 2, = 320 calculate the following: i The per-unit resistance. ii. The per-unit current. ii. The per-unit voltage across the resistor. iv. The per-unit power.arrow_forwardThe input to the circuit in Figure P 3.6-25 is the voltage of the voltage source vs. The output is the current measured by the meter i.. Show that the output of this circuit is proportional to the input. Determine the value of the constant of proportionality. ww Us 2Ω Figure P 3.6-25 40 Ω www 10 92 ia 20 Ω Ammeter iof 40 Ω 50 iaarrow_forward5. a. State Kirchhoff's voltage law. b. Determine the unknown voltage drop V3, in the figure given. c. Determine V3, if the polarity of Vs2 is reversed. VS2 15 V + 12 V WWW ww wwwarrow_forward
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