The apparent power drawn by an A.C. circuit is 10 KVA and active power is 8 kW. The reactive power in the circuit is (a) 4 KVAR (b) 6 kVAR (c) 8 KVAR (d) 16 kVAR
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- In an R-L series circuit, the apparent power is 560 VA, PF = 62%. Find reactive power.The circuit in Figure 24-2 is connected to a 1000-Hz line. The resistor has a current flow of 60 A, the inductor has a current flow of 150 A, and the capacitor has a current flow of 70 A. The circuit has a total impedance of 4.8 . ETITZ4.8VAPFERIR60ARPELIL150AXLVARsLLECIC150AXCVARsCCAn R-L series circuit contains two resistors and two inductors. The resistors dissipate powers of 96 watts and 125 watts. The inductors have reactive powers of 100 VARs and 78 VARs. What is the power factor?
- Assume that the circuit shown in Figure 17-2 is connected to a 480-V, 60-Hz line. The inductor has an inductance of 0.053 H, and the resistor has a resistance of 12 . ET480VITZVAPFERIRR12PELILXLVARsLL0.053H FIGURE 17-2 R-L series circuit.The circuit in Figure 24-2 is connected to a 60-Hz line. The apparent power in the circuit is 48.106 VA. The resistor has a resistance of 12 . The inductor has an inductive reactance of 60 , and the capacitor has a capacitive reactance of 45 . ETITZVA48.106PFERIRR12PELILXL60VARsLLECICXC45VARsCCAssume the circuit shown in Figure 21-1 has an apparent power of 432 VA and a true power of 345.6 W. The capacitor has a capacitance of 15.8919 F, and the frequency is 60 Hz. Find the missing values. ET ER EC IT IR IC Z R XC VA432 P345.6W VARSC PF C15.8919F
- Assume the circuit shown in Figure 17-2 has a power factor of 78%, an apparent power of 374.817 VA, and a frequency of 400 Hz. The inductor has an inductance of 0.0382 H. ETITZVA374.817PF78%ERIRRPELILXLVARsLL0.0382HA 15µF capacitor and a 470 ohm resistor are connected in series with a function generator. The supply voltage is 50V RMS 40Hz. Find the reactive power for this circuit.A 47 ohm resistor and a 0.2 mF capacitor are connected in series across a 3 kHz ac source. What will be the total impedance in rectangular form?
- A RL series circuit has an apparent power of 650 VA and true power of 375 watts. What is the reactive power in the circuit?A 20 ohm resistor and 50µF capacitor are connected in series with an A.C source having amplitude of 10 V and frequency 125 Hz. Calculate:What will be magnitude of the total circuit impedance of a series LR circuit excited by a 100 Hz ac source? The resistance is 40 ohm and the inductance is 4 mF.