1) An electrical load is rated for 1200 W at 120-V, single phase. The load current is 14 A. What is thepower factor?PF=2) A DC circuit with a 24 V source has three resistors wired in parallel, with resistances of 70, 100, and25 Q. What is the total current flowing in this circuit?Current =3) A three-phase motor is connected to a 277/480-V electrical system and draws 20 A with a PF of 0.85.How much annual energy does this device use if it is operated for 200 hours during the year?Energy =

Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Answered: 1) An electrical load is rated for 1200…

1) An electrical load is rated for 1200 W at 120-V, single phase. The load current is 14 A. What is the power factor? PF=

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: A balanced three-phase load requires 1.8kW and power factor 0.5. If the line voltage at the…

A: Given a balanced three phase load having, Power rating, P=1.8 kW. Power factor, cosϕ=0.5. The line…

Q: Optical encoders (rotary) are used for measuring ? (Select all that apply) 1. Light intensity 2.…

A: Encoders: Encoders are sensors, widely used in the electronics devices. They provide feedback about…

Q: For circuit series and parallel, the supply voltage of, Vsupply= 240 Volts, R₁= 2092, R₂=300,…

Q: If the value of de alpha is 08, then the value of oc beta of a transistoris 400 O 04

A: Given data, Value of dc α=0.8.

Q: The circuit below has three parallel resistors R₁= 4KQ, R₂=6 KQ and R3= 12 KM, and a supply voltage…

Q: 4) What is the inverse Fourier transform of X(jw)depicted below? -12-10 -8 0 (a) X (jw) 10 12 (b)…

A: As per Bartleby guideline we need to answer the first question only. Kindly repost the rest…

Q: An ideal battery is connected to three identical bulbs of resistance Ro and a capacitor of…

Q: + 1.5 Vo 150 www ₁ 100 ₂ 250 In the circuit above, all resistors are in ohms and the current souce…

A: Given circuit:

Q: A silicon wafer is uniformly doped with 4.5 x 1016 phosphorus atoms/cm³ and 5.5 x 10¹6 boron…

A: Given data, Phosphorus ND=4.5×1016 Boron NA=5.5×1016 Temperature T=300 K

Q: 13. Find circuit current in this schematic. R-30 kn E₁-10 V w XL-40 kn

A: The given circuit diagram is shown below,

Q: drawn Determine the current and power by the 5-n load resistor as shown below: 21 w le -T8V WR₂=5₁₂…

A: Considering the circuit diagram, Determining the Thevenin's and Norton's resistance across load,…

Q: 4. Find the phasors corresponding to the following v(t) = 24 cos (4t-15⁰) V a. b. i (t) = 8 cos (5t…

A: We need to find out phasor of given signal

Q: 1. Consider the difference equation shown below. y(n) = 0.0899x(n) + 0.0257x(n − 1) — 0.0257x(n − 2)…

Q: Sketch the output waveform for Vout in the following circuit on axes as shown. Assume the diode is…

A: In this question we need to draw a waveform of output voltage of the given circuit. The diode given…

Q: In a double sideband amplitude modulation with suppressed carrier (DSB-SC AM) system, the carrier is…

A: NOTE : “Since you have posted a question with multiple sub-parts, we will solve first three…

Q: 6.8 The volume charge density in nC/m³ in all space is given by P(x, y, z) = sin 5x sin 8y sin 2z…

A: The charge density is the quantity of charges present at a specific place. Linear charge density is…

Q: 7Α 6Ω 12V + 12Ω M -V+ 8Ω +1 16Ω 15V

Q: A long shunt compound DC generator delivers a load current of 150A at 230V and has armature, series…

Q: 2. A second order system with damping ratio 0.6 and natural undamped frequency 5 rad/sec. Write the…

Q: is*) The circuit in Figure 7 corresponds to a solar-powered lamp post. The solar panel charges the…

Q: source is (V-240v) calculate at a = = ² 6 a) V dc b) Vorms c) Pout

A: Given data The given question is an example of half wave-controlled rectifier with a Resistive load.…

Q: A 400 kVA, 2.2 kV, eight-pole, three-phase, star-connected, synchronous motor has a resistance of 1…

A: Given that: S=400 kVA, Vt= 2.2 kV, pole, P=8. Three-phase star-connected synchronous motor RS=1 Ohm…

Q: Using a Norton's equivalent circuit model with respect to terminals a and b in the circuit below,…

A: Given: Norton's Equivalent circuit Model R1 = 20ΩR2 = 18ΩR3 = 13Ω Determine: value of the…

Q: For the circuit given below, has values as follows; Vsupply = 120V; R₁ = 3.5KM; R₂ =5000; R3 =…

Q: Calculate the voltage drop of a 120/240 volts, three wire underground residential service installed…

A: Given: UnderGround service=Three Wire Cable = 2 AWG Aluminum URD Cableload Current (IL) = 80 ampone…

Q: a) RTotal = b) |Total = ON EN R₁ Figure (2) 3) The circuit in Figure (2) has values of, V = 40 Volt,…

A: As per our company guidelines we are supposed to answer only first question kindly repost the other…

Q: design a feedback control system which results in a closed system that reaches a commaned Өc with a…

A: To maintain the controlled variable near its set point, feedback control is used. To do this, the…

Q: Example 37.6. A 3-phase, 16-pole alternator has a star-connected winding with 144 slots and 10…

A: As per the question, the given alternator is a three-phase with 16 poles. The winding is conned in…

Q: Problem #11) For the following circuit, with the switch in position B, what would the value of R…

Q: (b) T(s) = (1 + 0.1s)(1 + 0.01s) (1+s)(1+0.001s)

A: As per Bartleby guideline we need to answer the first question only. Kindly repost the rest…

Q: . Find the equivalent capacitance. Ceq TOF tt LE to jefausto@ 15 F 12F1 25 F 18F 30F ان ہے

Q: The RMS value of the avrent sholon in figi is RI wwwmas lov (RMS) (50Hz) 5 2A O4A 2 5A 2-2 +6V-…

A: Given here a circuit and asked to find the rms current through it.

Q: 2. Find R(eq) at terminals a-b in the circuit. ad 8 Ω www 4Ω bow 30 Ω Μ 20 Ω 10 Ω ww 70 Ω Μ 40 Ω 60…

A: Given here a circuit and asked to find the equivalent resistance.

Q: ) The amplifier circuit shown below utilizes MOSFET transistor to operate at | Vor = 0.2V, IV. | =…

A: a) The ac analysis of the given circuit will Since Voltage is sampled from the output, so the type…

Q: Q2. The generalized Fourier Transform of 1 is the impulse function (f). Use this conclusion to find…

Q: Design the doping concentration and bias point of a pn diode on Si at 300 K, assuming the area of…

A: (a) :-Given Nd= 5×1017cm-3 ni = 1.5×1010cm-3 KT/q = 25mV Formula for built in potential is given by…

Q: Q1. For signal v(t) = /2 sin(2π x 4t) + 4 cos(2π x 8t), determine (a) period, (b) Fourier Series…

Q: Consider the signal s(t) = 21[0,1] (t) — 31[1,2] (t). (a) Sketch (carefully labeling both axes) the…

Q: IV) Time variation of a continous wave propagating along +z direction with a speed of 5m/s is nown…

A: Given wave form: Time period, T = 6-2=4 sec. Amplitude of the waveform, A=4.

Q: If the value of dc alpha is 08, then the value of oc beta of a transistor is 04 040 O 400 O 04

Q: A 50 kVA transformer has an efficiency of 98% at full load,0.8 p.f. and 97% at half full-load, 0.8…

Q: The RMS value of the avrent shown in figi is

A: Given data, VS =10 VVL =6 VR= 2 Ω Here only the RMS value of the parameter are considered. The given…

Q: V₁ 1K ww +₁ 2K ww 1K DO Find the following: a. Closed loop gain. answer is NOT 2) b. Percentage…

Q: Determine: a. Thevenin's equivalent resistance b. Thevenin's equivalent resistance c. The load…

Q: 3.7 The transfer function corresponding to the asymptotic Bode plot shown in Fig. P3.7. has only…

Q: What is the maximum fan-out for the basic RTL gate with VCC =5V, BF =25, RB= 10k2, RC= 1k2, VCE…

A: . SOLUTION Given Vcc = 5V βf = 25…

Q: useful flux

Q: 2. From the given circuit, calculate the voltage required to turn on the UJT. VBB +20V R1 C1 0.1 UF…

A: Given:

Q: Use mesh-current analysis to find the branch currents indicated in the networks shown below.

A: It is given that:

Q: 5. Find Req and I in the circuit 20 V 4Ω w 6Ω Req 8 Ω 10 Ω 2 Ω Μ 12 Ω 4Ω www 5Ω Μ 1Ω 2 Ω 3 Ω

Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

1) An electrical load is rated for 1200 W at 120-V, single phase. The load current is 14 A. What is the
power factor?
PF=
2) A DC circuit with a 24 V source has three resistors wired in parallel, with resistances of 70, 100, and
25 Q. What is the total current flowing in this circuit?
Current =
3) A three-phase motor is connected to a 277/480-V electrical system and draws 20 A with a PF of 0.85.
How much annual energy does this device use if it is operated for 200 hours during the year?
Energy =

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A 3-phase, 50 Hz, 1100 V motor has a total load output of 100 hp and a power factor of 0.78 learning and an efficiency of 85 %. This power factor is corrected to 0.92 by a capacitor bank connected in delta. A capacitance unit is made up of 4 identical 275 V capacitors. So find the capacitance of each capacitor.
Use 3 decimal places and box the final answer. A 4-ohm resistor is in series with a 7.96-mH inductor connected across a 110-V 60-Hz source. Determine : a) the impedance b) the input current c) the voltage across the resistor and the inductor d) Draw the phasor diagram showing the current and the voltages. e) The power factor and the power input to the circuit.
57. An RLC series circuit connected to a 110-volt and 50-cycle AC source, contains the following series resistances and reactances: R1=10 ohm, R2= 15, XL1=20 ohms, XL2=25 ohms, XC= 40 ohms. Find the following a. Total inductance in millihenry b. total current c. reactive power
For figure (1)draw and calculate the voltages waveform across each half of secondary winding and across load when 100sin2π60t applied across the primary, then find PIV.
Answer the following: a. A capacitance is connected to a 115 V, 25 Hz mains and takes a current of 5 A. find the current when both the capacitance and frequency are doubled. b. A 220 V, 60 Hz circuit draws a current of 11 A with a power factor of 0.8 lagging. Find the resistance of the circuit.
An impedance coil takes 10A and absorbs 250 W when connected across a 220V, 60Hz source. What power will it absorb when connected across 110 V, 25 Hz mains? a. 539 W b. 239 W c. 439 W d. 339 W
What will be the value of the twiddle factor: W42
A single-phase AC motor is connected to a 550-V, 50-Hz supply. A clamp-on ammeter indicates the motor has a current draw of 25 A at full load. A wattmeter connected to the motor indicates a true power of 10 kW. How much capacitance is needed to correct the power factor to 99%?
When a voltage of 100V at 50Hz is applied to an impedance coil A, the current taken is 8A and the power is 120 W. When applied to an impedance coil B, tue currents is 10 A and the power is 500W. What current and power will be talen when 120V, 60 Hz is applied when two coils are connected in parallel?
The current, power factor and input power to.a 3-phase ac motor is 8.07A, 0.65 and 5KW. Calculate the voltage through it. Select one: O a. None of these O b. 106V O c. 550V O d. 250V Next page
2. An inductive reactance of 8 0 is connected in parallel with a capacitive reactance of 18 N; this combination is then connected in series with a variable resistance. For what value of resistance will the power factor be 0.5, and what current will the circuit takes if the impressed voltage is 118 volts?
- Define Wye and Delta Connection in AC Motor - Define Three Phase AC Motor