A small motor draws a current of 1.75 A from a 120-V line. The output power of

Question:

A small motor draws a current of 1.75 A from a 120-V line. The output power of the motor is 0.20 hp.
(a) At a rate of $0.060/kWh, what is the cost of operating the motor for 4.0 h?
(b) What is the efficiency of the motor?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

College Physics

ISBN: 978-0495113690

7th Edition

Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett

See More Books

Question Posted: Nov 01, 2011 02:48 PM

See More Questions

A 120.0-V motor draws a current of 7.00 A when running at normal speed. The resistance of the armature wire is 0.720 . (a) Determine the back emf generated by the motor. (b) What is the current at...
An electric motor draws a current of 16 amp at 110 V. The output shaft delivers a torque of 10 N-m at a speed of 1500 RPM. Determine (a) The electric power transferred. (b) Shaft power. (c) The rate...
At its normal operating speed, an electric fan motor draws only 15.0% of the current it draws when it just begins to turn the fan blade. The fan is plugged into a 120.0-V socket. What back emf does...
If a check correctly written and paid by the bank for $ 648 is incorrectly recorded on the company's books for $ 684 , the appropriate treatment on the bank reconciliation would be to THE ANSWER IS...
Clay Company uses the completed contract method on a contract that requires 14 months to complete. The contract is for $750,000, and has estimated costs of $425,000. At the end of 2016, $210,000 of...
Which country has the comparative advantage? What is the opportunity cost? What the production pre specialisation? What is the production post specialisation? By how much has production in both goods...
For the HiTech example (17.1), find the risk-neutral probability of default. Example 17.1 (A leveraged firm) The HiTech firm currently has a value of $1 mil- lion and is financed in part by a 5-year...
In Figure a frictionless roller-coaster car of mass m - 825 kg tops the first hill with speed v0 = 17 .0 m/s at height h = 42.0 m. How much work does the gravitational force do on the car from that...
Maxey & Sons manufactures two types of storage cabinets-Type A and Type B-and applies manufacturing overhead to all units at the rate of $128 per machine hour. Production information follows....
As a manufacturer of athletic shoes whose image, indeed performance, is widely regarded as socially responsible, you find your costs increasing. Traditionally, your athletic shoes have been made in...
A copper cable is designed to carry a current of 300 A with a power loss of 2.00 W/m. What is the required radius of this cable?
It has been estimated that there are 270 million plug-in electric clocks in the United States, approximately one clock for each person. The clocks convert energy at the average rate of 2.50 W. To...
Write each of the numerals in Problems 3742 in the Babylonian numeration system. 521
Many individuals entrusted their life savings to Joe Forte. The victims impact statements read at Forte s sentencing spoke of ruined lives, lost inheritances, healthcare concerns, and worthless...
You are the New Business Development Manager for a large UK - based DIY ("do it yourself") company that imports and sells garden furniture through its numerous retail outlets. Your imported sales...
Taking the point of view of companies, categorize and compare the different sources of external financing available to them and explain the criteria for choice (Explain the criteria for choosing...
2. Duch's utility function for steaks and kebabs is u(s, k) = s k (a) Calculate Duch's marginal utility of steaks, MU, (b) Calculate Duch's marginal utility of kebabs, MUk (c) Calculate Duch's MRS:...
Question 1 Jul 16, 2019, Singapore - Popular social network TikTok is teaming up for the first time with Samsung to launch #slideandswivel, a dance challenge that celebrates positive expression and...
Are background checksincluding credit checks, criminal history checks, and looking at a candidates Facebook page too invasive? Explain your answer.
Use the following data to answer the next two (2) questions: Product 1 Product 2 Product 3 Direct Material Cost $25,000 $30,000 $35,000 Direct Labor Cost $30,000 $40,000 $50,000 Direct Labor Hours...
Explain how and when to modify the marketing plan.
A freight car with a mass of 25 000 kg rolls down an inclined track through a vertical distance of 1.5 m. At the bottom of the incline, on a level track, the car collides and couples with an...
Two protons approach each other with different speeds. (a) Will the magnitude of the total momentum of the two-proton system be (1) greater than the magnitude of the momentum of either proton, (2)...
In nuclear reactors, subatomic particles called neutrons are slowed down by allowing them to collide with the atoms of a moderator material, such as carbon atoms, which are 12 times as massive as...
Of what use are government and business budgets to reporters and where would an agency or business hide spending that it wasn't especially interested in sharing with the public? (Please keep in mind...
Mom and Dad owned a house as tenants by the entirety until Dads death last year. Mom then transferred the house to herself as life tenant, with the remainder to her son Sonny as remainderman. Just...
Write a brief story of your life and career to date. Why and how have you become who you are today? What are your strengths and weaknesses? Now write your story again through the eyes of people who...

A small motor draws a current of 1.75 A from a 120-V line. The output power of

Question:

Step by Step Answer:

a The power input to the motor ...View the full answer

College Physics

Students also viewed these Electricity and Magnetism questions