Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 10, Problem 13ST
To determine
The value of apparent power.
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For the certain load, the true power is 8W and the reactive power is 12 VAR. Determine the apparent power in VA
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If the true power = 4W and the reactive power = 0VARs the power factor is ____________.
answer options are
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.6
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A 30 kVARS capacitor bank is connected in parallel to a 360 kW load. The power input reflects a power factor of 0.9 in lagging. The power factor of the load is:A)0.997(-)
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D)0.928(-)
E) None of the above
Chapter 10 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 10 - In a series RC circuit, the impedance increases...Ch. 10 - In a series RC lag circuit, the output voltage is...Ch. 10 - Admittance is the reciprocal of susceptance.Ch. 10 - In a parallel RC circuit, as frequency is...Ch. 10 - The phase angle of an RC circuit is measured...Ch. 10 - Prob. 6TFQCh. 10 - Prob. 7TFQCh. 10 - The power factor is equal to the tangent of the...Ch. 10 - A purely resistive circuit has a power factor of...Ch. 10 - Prob. 10TFQ
Ch. 10 - Prob. 1STCh. 10 - Prob. 2STCh. 10 - Prob. 3STCh. 10 - When the frequency of the voltage applied to a...Ch. 10 - Prob. 5STCh. 10 - Prob. 6STCh. 10 - The voltages in Problem 6 are measured at a...Ch. 10 - Prob. 8STCh. 10 - Prob. 9STCh. 10 - When the frequency of the source voltage is...Ch. 10 - Prob. 11STCh. 10 - Prob. 12STCh. 10 - Prob. 13STCh. 10 - Prob. 14STCh. 10 - If the bandwidth or a certain low-pass filter is 1...Ch. 10 - Prob. 1TSCCh. 10 - Prob. 2TSCCh. 10 - Prob. 3TSCCh. 10 - Determine the cause for each set of symptoms....Ch. 10 - Determine the cause for each set of symptoms....Ch. 10 - An 8 kHz sinusoidal voltage is applied to a series...Ch. 10 - What is th waveshape of the current in the circuit...Ch. 10 - Find the impedance of each circuit in Figure...Ch. 10 - Determine the impedance and the phase angle in...Ch. 10 - For the circuit of Figure 10-69, determine the...Ch. 10 - Repeat Problem 5 for C=0.0047F.Ch. 10 - Calculate the total current in each circuit of...Ch. 10 - Repeat Problem 7 for the circuits in Figure 10-68.Ch. 10 - For the circuit in Figure 10-70, draw the phase or...Ch. 10 - For the circuit in Figure 10-71, determine the...Ch. 10 - To what value must the rheostat be set in Figure...Ch. 10 - For the lag circuit in Figure 10-73, determine the...Ch. 10 - Repeat Problem 12 for the lead circuit in Figure...Ch. 10 - Determine the impedance for the circuit in Figure...Ch. 10 - Determine the impedance and the phase angle in...Ch. 10 - Repeat Problem 15 for the following frequencies:...Ch. 10 - Determine the impedance and phase angle in Figure...Ch. 10 - For the circuit in Figure 10-78, find all the...Ch. 10 - For the parallel circuit in Figure 10-79, find...Ch. 10 - For the circuit in Figu 10-80, determine the...Ch. 10 - Repeat Problem 20forR=4.7k,C=0.047F,andf=500Hz.Ch. 10 - Convert the circuit in Figure 10-81 to an...Ch. 10 - Determine the voltages across each element in...Ch. 10 - Is the circuit in Figure 10-82 predominantly...Ch. 10 - Find the current through each branch and the total...Ch. 10 - For the circuit in Figure 10-83, determine the...Ch. 10 - In a certain seris RC circuit, the true power is 2...Ch. 10 - In Figure 10-71, what is the true power and the...Ch. 10 - What is the power factor for the circuit of Figure...Ch. 10 - Determine Ptrue, Pr, Pa,andPF for the circuit in...Ch. 10 - The lag circuit in Figure 10-73 also acts as a...Ch. 10 - Plot the frequency response curve for the circuit...Ch. 10 - Draw the voltage phasor diagram for each circuit...Ch. 10 - Thr rms value of the signal voltage out of...Ch. 10 - Determine the cutoff frequency for each circuit in...Ch. 10 - Determine the bandwidth of the circuit in Figure...Ch. 10 - Assume that the capacitor in Figure 10-85 is...Ch. 10 - Each of the capacitors in Figure 10-86 has...Ch. 10 - Determine the output voltage for the circuit in...Ch. 10 - Determine the output voltage for the circuit in...Ch. 10 - A single 240V,60Hz source drives two loads. Load A...Ch. 10 - What value of coupling capacitor is required in...Ch. 10 - Determine the value of R1 required to get a phase...Ch. 10 - Draw the voltage and current phasor diagram for...Ch. 10 - A certain load dissipates 1.5kW of power with an...Ch. 10 - Deteine the series element or element that are in...Ch. 10 - Determine the value of C2 in Figure 10-91 when...Ch. 10 - Draw the schematic for the circuit in Figure 10-92...Ch. 10 - Open file P10-49; files are found at...Ch. 10 - Open file P10-50. Determine if there is a fault...Ch. 10 - www.prenhall.com/floyd. Open file P10-51....Ch. 10 - www.prenhall.com/floyd. Open file P10-52....Ch. 10 - www.prenhall.com/floyd. Open file P10-53....Ch. 10 - www.prenhall.com/floyd. Open file P10-54....
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- In an R-L series circuit, the apparent power is 560 VA, PF = 62%. Find reactive power.arrow_forwardThe circuit is connected to a 400-Hz line with an applied voltage of 35.678 V. The resistor has a true power of 14.4 W. and there are 12.96 inductive VARs and 28.8 capacitive VARs. ET35.678VITZVAPFERIRRP14.4WELILXLVARsL12.96LECICXCVARsC28.8Carrow_forwardThe 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 . ETITZVA48.106PFERIRR12PELILXL60VARsLLECICXC45VARsCCarrow_forward
- What is the V0(t) in the c rcut below. Assume Vs(t) = 10sin(2000π t)arrow_forwarddetermine the overall impedance if R=490ohms, L=62mH, C=0.601microF, i(t)=Icos(11600rad/s)tarrow_forwardThe active and reactive powers of an inductive circuit are 60W and 80VAR respectively. The power factor of the circuit is ___. a. 0.8 lagging b. 0.75 lagging c. 0.5 lagging d. 0.6 laggingarrow_forward
- In The Circuit; (X.X =1.8)a. calculate the re value.b. Draw the Ac equivalent circuit.c. calculate the values of Zi,Z0 and Avarrow_forwardTo calculate the total impediance (Z) in each branch, since the coil and resistor - capacitor pair are in paralle Z1 is 159.06 ohms and Z2 is 59.99 ohmsarrow_forwardA load of 60 -j80 has a current of 9.60 A with a phase angle of 30o, the total reactive power is:arrow_forward
- A 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.arrow_forwardPerform the indicated operations, and express the answer in both rectangular and polar forms: [(10<25° / 5<-10°) + (3<15°/ 3-j5)]j2arrow_forwardIn a pure inductive load, (without resistive elements), the apparent power is a) Equal to the real power b) Greater than the reactive power c) Equal to the reactive power d) None of the abovearrow_forward
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