Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
expand_more
expand_more
format_list_bulleted
Question
Chapter 10, Problem 2TSC
To determine
To identify: The cause for a particular symptom in a given circuit.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
"I need something clear written by hand
with steps."
Find Laplace transform and the corresponding ROC for
x(t) = e−3sin(2t) u(t)dt
Three similar coils, connected in star, take a total
power of 1.5 kW, at a power factor of 0.2, from a
three-phase, 400 V, 50 Hz supply. Calculate: (a) the
resistance and inductance of each coil; (b) the line
currents if one of the coils is short-circuited.
(a) Three 20 µF capacitors are star-connected across
a 400 V, 50 Hz, three-phase, three-wire supply.
Calculate the current in each line. (b) If one of the
capacitors is short-circuited, calculate the line cur
rents. (c) If one of the capacitors is open-circuited,
calculate: the line currents and the p.d. across each
of the other two capacitors.
ANS:
1.525 A; 2.64 A, 2.64 A, 4.57 A; 1.32 A, 1.32 A, 0;
210 V
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....
Knowledge Booster
Similar questions
- Explain the advantages of three-phase supply for distribution purposes. (b) Assuming the relationship between the line and phase values of currents and voltages, show that the active power input to a three-phase balanced load is √3VI cos φ, where V and I are line quantities. (c) Three similar inductors, each of resistance 10 Ω and inductance 0.019 H, are delta-connected to a three-phase, 400 V, 50 Hz sinusoidal supply. Calcu late: the value of the line current; the power factor and the active power input to the circuit. ANS: 59.5 A, 0.858 lag, 35.5 kWarrow_forwardnot use ai pleasearrow_forwardA three-phase, 400 V, star-connected motor has an output of 50 kW, with an efficiency of 90 per cent and a power factor of 0.85. Calculate the line current. Sketch a phasor diagram showing the voltages and currents. If the motor windings were connected in mesh, what would be the correct voltage of a three phase supply suitable for the motor? ANS: 90.8 A, 240 Varrow_forward
- Don't use ai to answer I will report you answerarrow_forwardShow with the aid of a phasor diagram that for both star- and delta-connected balanced loads, the total active power is given by √3VI cos φ, where V and I are the line values of voltage and current respectively and φ is the angle between phase values of voltage and current. A balanced three-phase load consists of three coils, each of resistance 4 Ω and inductance 0.02 H. Determine the total active power when the coils are (a) star-connected, (b) delta-connected to a 400 V, three phase, 50 Hz supply. ANS:11.56 kW, 34.7 kWarrow_forwardThe load connected to a three-phase supply comprises three similar coils connected in star. The line currents are 25 A and the apparent and active power inputs are 20 kVA and 11 kW respectively. Find the line and phase voltages, reactive power input and the resistance and reactance of each coil. If the coils are now con nected in delta to the same three-phase supply, calculate the line currents and the active power taken. ANS : 462 V, 267 V, 16.7 kvar, 5.87 Ω, 8.92 Ω; 75 A, 33 kWarrow_forward
- A three-phase delta-connected load, each phase of which has an inductive reactance of 40 Ω and a resistance of 25 Ω, is fed from the secondary of a three-phase star-connected transformer which has a phase voltage of 230 V. Draw the circuit diagram of the system and calculate: (a) the current in each phase of the load; (b) the p.d. across each phase of the load; (c) the current in the transformer secondary windings; the total active power taken from the supply and its power factor.arrow_forwardDerive the numerical relationship between the line and phase currents for a balanced three-phase delta connected load. Three coils are connected in delta to a three-phase, three-wire, 400 V, 50 Hz supply and take a line current of 5 A 0.8 power factor lagging. Calculate the resistance and inductance of the coils. If the coils are star-connected to the same supply, calculate the line current and the total power. Calculate the line cur rents if one coil becomes open-circuited when the coils are connected in star. Ans: 110.7 Ω, 0.264 H; 1.67 A, 926 W; 1.445 A, 1.445 A, 0arrow_forwardDerive, for both star- and delta-connected systems, an expression for the total power input for a balanced three-phase load in terms of line voltage, line current and power factor. The star-connected secondary of a transformer supplies a delta-connected motor taking a power of 90 kW at a lagging power factor of 0.9. If the volt age between lines is 600 V, calculate the current in the transformer winding and in the motor winding. Draw circuit and phasor diagrams, properly labelled, showing all voltages and currents in the transformer secondary and the motor. ANS: . 96.2 A, 55.6 Aarrow_forward
- Deduce the relationship between the phase and the line voltages of a three-phase star-connected generator. If the phase voltage of a three-phase star-connected generator is 200 V, what will be the line voltages: (a) when the phases are correctly connected; (b) when the connections to one of the phases are reversed? ans: 346 V; 346 V, 200 V, 200 Varrow_forwardQ2: Given a discrete sequence x(n) = [1,-1,2,4, 1, 3,-1,1] and its spectrum X(k): i. Show that: X(k) =G(k)+WH(k) k=0,1,2,3,4,5,6,7 where G(k) = DFT[g(n)] and H(k) = DFT[h(n)], g(n) and h(n) are even and odd components of x(n) respectively. ii. Compute G(k) and H(k) using the method of computation of DFTS of two real sequences. (15 marks)arrow_forwardQ2: Given a discrete sequence x(n) = [1,-1,2,4, 1, 3,-1,1] and its spectrum X(k): i. Show that: X(k) = G(k)+WH(k) k = 0,1,2,3,4,5,6,7 where G(k) = DFT[g(n)] and H(k) = DFT[h(n)], g(n) and h(n) are even and odd components of x(n) respectively. ii. Compute G(k) and H(k) using the method of computation of DFTS of two real sequences.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning