Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 4, Problem 51P
The motor of a power saw is rated 72% efficient. If 1.8 hp are required to cut a particular piece of lumber, what is the current drawn from a 120 V supply?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The maximum power that can be generated
by a wind turbine is called
Select one:
Cut-in Power
Rated Power
Cut-out Power
lock-in Power
An AC ammeter has a direct reading 0-600A scale when used with a 400:3 ratio current transformer. The ammeter is now used with a 1,000:3 ratio current transformer. What should be the ammeter reading when the actual current is 3 A. use four decimal places if necessary.
f) To what voltage the machine will cxcite when the field resistance is 55 and the speed 800 rp.m. ?
05
1.
Field current (A)
10
50
100
175
4
EMF ()
220
245
262
Chapter 4 Solutions
Introductory Circuit Analysis (13th Edition)
Ch. 4 - What is the voltage across a 220 resistor if the...Ch. 4 - What is the current through a 2.20 resistor if the...Ch. 4 - How much resistance is required to limit the...Ch. 4 - At starting, what is the current drain on a 12 V...Ch. 4 - If the current through a 100k resistor is 3.6A...Ch. 4 - If a voltmeter has an internal resistance of 50k...Ch. 4 - If a refrigerator draws 2.2 A at 120 V, what is...Ch. 4 - If a clock has an internal resistance of 8k find...Ch. 4 - A washing machine is rated at 4.2 A at 120 V. What...Ch. 4 - A CD player draws 80 mA when 4.5 V is applied....
Ch. 4 - The input current to a transistor is 20A If the...Ch. 4 - Prob. 12PCh. 4 - If an electric heater draws 9.5 A when connected...Ch. 4 - In a TV camera, a current of 5.6 mA passes through...Ch. 4 - Plot the curve of I (vertical axis) versus...Ch. 4 - Plot the I-V curve for a 5 and a 20 resistor on...Ch. 4 - Prob. 17PCh. 4 - Sketch the internal resistance characteristics of...Ch. 4 - Plot the I-V characteristics of a 1k,10k, and a 1M...Ch. 4 - If 540 J of energy are absorbed by a resistor in...Ch. 4 - The power to a device is 40 joules per second...Ch. 4 - How many joules of energy does a 8 W nightlight...Ch. 4 - How long must a steady current of 1.4 A exist in a...Ch. 4 - What is the power delivered by a 12 V battery if...Ch. 4 - The current through a 4k resistor is 7.2 mA. What...Ch. 4 - The power consumed by a 2.2k resistor is 240 mW....Ch. 4 - What is the maximum permissible current in a 82,...Ch. 4 - The voltage drop across a transistor network is 22...Ch. 4 - If the power applied to a system is 10 kW, what is...Ch. 4 - A 1 W resistor has a resistance of 4.7M . What is...Ch. 4 - A 2.2k resistor in a stereo system dissipates 42...Ch. 4 - What are the hot resistance level and current...Ch. 4 - What are the internal resistance and voltage...Ch. 4 - A calculator with an internal 3 V battery draws...Ch. 4 - A 20k resistor has a rating of 100 W. What are the...Ch. 4 - What is the total horsepower rating of a series of...Ch. 4 - A 10 resistor is connected across a 12 V battery....Ch. 4 - How much energy in kilowatthours is required to...Ch. 4 - How long can a 1500 W heater be on before using...Ch. 4 - A 60 W bulb is on for 10 h. a. What is the energy...Ch. 4 - In 10 h an electrical system converts 1200 kWh of...Ch. 4 - At 12/kWh how long can you play a 250 W color...Ch. 4 - The electric bill for a family for a month is...Ch. 4 - How long can you use an Xbox 360 for $1 if it uses...Ch. 4 - The average plasma screen TV draws 339 W of power,...Ch. 4 - The average PC draws 78 W. What is the cost of...Ch. 4 - If a house is supplied with 120 V, 100 A service,...Ch. 4 - What is the total cost of using the following at...Ch. 4 - What is the total cost of using the following at...Ch. 4 - Prob. 50PCh. 4 - The motor of a power saw is rated 72% efficient....Ch. 4 - What is the efficiency of a dryer motor that...Ch. 4 - A stereo system draws 1.8 A at 120 V. The audio...Ch. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - An electric motor used in an elevator system has...Ch. 4 - The motor used on a conveyor belt is 85%...Ch. 4 - Prob. 58PCh. 4 - The overall efficiency of two systems in cascade...Ch. 4 - What is the total efficiency of three systems in...Ch. 4 - If the total input and output power of two systems...Ch. 4 - Using PSpice 0r Multisim, repeat the analysis of...Ch. 4 - Using PSpice or Multisim, repeat the analysis of...
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
- The armature of a de generator has 0.050 effective resistance. Each brush has an effective resistance of 0.01Q. The terminal voltage is 100 volts, while the current is 40 Amperes. What is the efficiency of the machine?arrow_forwardgive me dc or ac motor that can be assemble easily like electric fanarrow_forwardWhat is the coupling field used between the electrical and mechanical systems in energy conversion devices? a) Magnetic field b) Electric field c) Magnetic field or Electric field d) None of the mentionedarrow_forward
- 7)Current transformer is used to Step up the voltage Step up the current Step down the current Step down the voltagearrow_forward9. What is one of the most common analog meter movements? Select one: A. CONCENTRIC VANE B. D'ARSONVAL MOVEMENT C. PLUNGER D. MOVING IRONarrow_forwardIn an ammeter, The deflecting torque is proportional to the current passing through it, and the instrument has full scale deflection of 800 for a current of 5 A. What deflection will occur for a current of 2.5 A when the instrument is spring controlled ?arrow_forward
- The slight sideward motion of a shaft is called end play. The end play in theshaft of a rotor for an electric motor should not be more than 1⁄32 inch. Onemotor has an end play of 0.0305 inch. Is this end play more than 1⁄32 inch?arrow_forwardit is the ratio of measured voltage to the measured current of an electrical load circuit. A. Resistance B. Hot resisitance C. Cold resistance D. infinite Resistancearrow_forwardWhat is the relationship between the Arc Resistance and the Area of the Cross-Section of the Arc? A. Inversely Proportional B. Does not affect each other C. Proportional D. Equalarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
Boost Converters and Buck Converters: Power Electronics; Author: Physics Videos by Eugene Khutoryansky;https://www.youtube.com/watch?v=vwJYIorz_Aw;License: Standard Youtube License