Consider two nodes A and B connected by an impedance of j5 22. If the voltages at nodes A and B V respectively, the real power that can be transferred from node A to B are 100<30 V and 100<0 is?
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- d. 565.685 V If a Load absorbs 20 kVA at a leading power factor of 0.6. Then the complex power is: Select one: O a. 12000 - j16000 VA O b.-12000 + j16000 VA O c. 12000 + j16000 VA O d. None of these Given the circuit below and the associated set of voltages and currents, the reactive Power developed by im voltage source is FENG300 MINTERMin the figure below, find a) The p.d across j5 ohmn inductance b)The p.d across -j10 ohmn capacitance c) the current in 20 ohmn resitance d) the current in (12+j160 ohmn impedance e) the complex power for (12+j16) ohmn impedanceConsider 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
- 2. A voltage applied to a load is V=208 4 20°V and current through load is I=10 a–10° A. Find the following [SO 1] o complex power consumed by load o Is the load inductive or capacitive? o the power factor of the load o the reactive power consumed or generated by the load. o Does the load consume or supply reactive power?For the circuit shown, determine the current through the 2+j5 ohms impedance. jsn 2.2 2 -M m BLIOA 5L20 AN 4 jios 100 20 A 3.40 2c) A heater with resistance 10 N is driven by an AC voltage source (120 V). For the circuit shown below, determine the following: 0.50 j5n Vs 120 V/50 Hz j1n Figure Ql i. The total circuit impedance, Zr, in polar form. 11. The supply current, I.. iiI. The phasor diagram indicating the supply voltage, V, and the supply current, 17 iv. Apparent Power, Real Power, Reactive Power and Power Factor. V. The heater output power. 100
- Two circuits the impedance of which are given by z₁ = (10 + j15) and z₂ = (6 - j8) are connected in parallel. If the total current supplied is 15A, What is the power taken by each branch?XL=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).Two impedances Z₁ and Z2 are connected in series to a voltage source with voltage Vs volts. Let V₁ be the voltage across Z₁ and V₂ be the voltage across Z2. Then, the total voltage Vs is divided between V₁ and V2 in proportion to impedance values Z₁ and Z2. O a. True O b. False
- The equation of two currents in parallel connected in electric devices are i = 12 sin ( 377t + T/4 ) Ampere and i, = 5 sin ( 377t - T/4 ) Ampere. a. What is the ms value of the resultant current? b. What is the value of A and B? c. What is the form factor?Problem 4: In the circuit shown below, v.(t) = 15 cos(8001) V: 202 www 6 mH oooo elle 2:5 Use ideal transformer relationships to determine Vour(t). Ans: Your(t) = 6.853 cos(800t - 63.234°) V elle 12mH oooo 109, Vout (t)In the circuit in the figure, there is a load consisting of the series connection of the resistor R0 and the inductance L0 between the terminals a and b. The amplitude of the VS (t) voltage is √2 150 volts, phase angle = 0 degrees, period T = 200π microseconds.Since R = 300 ohms and C = 1 microfarad a)Find the values of R0 and L0 that enable the load to draw maximum average power from the circuit when the load phase angle is constant at 45 degrees? b)Calculate the average power on the load?