3 3. An electric radiator is required to dissipate 2 kW when connected to a 230 Vsupply. If the cols of the radiator are of wire 0.028 inch in diameter havingresistivity of 60 micro-ohm-cm, calculate the necessary length of the wire inmeters. (Solution)10.35 m20.25 mO 6.24 mO 17.31 m

Answered: Image /qna-images/answer/a8c2f850-2f40-417c-a076-8a378c49252c.jpg

Answered: 3. An electric radiator is required to…

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

Similar questions

The construction of PV solar cells uses a number of critical elements. One is indium an ingredient of the transparent conducting coating on the surface of the cell. The average material intensity for indium in solar cells is approximately 0.05 kg/kWnom. Calculate the quantity of indium that would be required for a project that would provide PV solar power with capacity factor of 0.25, sufficient to meet one third of the present needs of the US, population 301 million, each using an average of 10.2 kW. The current world production of Indium is 600 tones per year. If the solar project were to be implemented over a 5 year time span, is it true that the supply of indium be adequate?
a) A 500-watt Tungsten Halogen lamp has an efficacy of 20 lumens/watt. Calculate its mean spherical intensity. b) Two sources of candle power or luminous intensity 200 candela (cp) and 250 candela (cp) are mounted at 8 and 10 m, respectively? The horizontal distance between the lamp posts is 40 m, calculate the illumination in the middle of the posts.
An electric radiator is required to dissipate 1 kW when connected to a 220 V supply. If the coils of the radiator are of wire 0.5 mm in diameter having resistivity of 70 μΩ-cm, calculate the length of the wire.
Estimate the dielectric losses in the solid specimen subjected to an alternating field of 40KV/cm, has an absolute permittivity of 4.445 x10-11 and the loss angle of that solid dielectric material is 0.28647at Oman power frequency. And also the same specimen while subjected to 3 KV/cm DC supply with the resistance value of 10 Mega Ohm, then determine the heat generated in the specimen.
A Barangay power station supplies 60KW to a load over 2500 ft, 100mm squared, two conductor copper feeders, the resistance of which is 0.078 ohm per 1000ft. The bus bar voltage is maintained constant at 600V. Determine the maximum power which can be transmitted.
A barangay power station supplies 60kW to a load over 2,500ft, 100 mm², two conductors copper feeder. The resistance of which is 0.0078 ohm per 1,000 ft the bus bar voltage is maintained constant at 600V. Determine the load current.
A solar panel has a surface area of 0.5 m^2 and delivers maximum power at 2.5A, 19 V when in sunlight with incident radiation of 95 mW/cm^2. If the open circuit voltage is 25 V and the short circuit current is 3 A, calculate:(a) the power generated by the panel,(b) the fill factor, and(c) the efficiency of the panel. (d) Given that the solar panel is exposed to sunlight 6.5 hours per day (on average) and the energy used to manufacture the solar panel is 890 kWh/m^2, calculate the energy payback time of the solar panel.
Regional Maritime University (RMU) campus has 200 classrooms and 400 faculty offices. The classrooms are equipped with 12 fluorescent tubes, each consuming 110 W, including the electricity used by the ballasts. The faculty offices, on average, have half as many tubes. The campus is open 240 days a year. The classrooms and faculty offices are not occupied an average of 4 h a day, but the lights are kept on. If the unit cost of electricity is GH₵ 0.082/kWh, determine how much the campus will save a year if the lights in the classrooms and faculty offices are turned off during unoccupied periods.
An electric radiator is required to dissipate 1kW when connected to a 230V supply. If the coils of the radiator are of wire 0.5mm in diameter having resistivity of 60 michro olms cm, calculate the neccesary length of the wire.
A three-axis stabilized satellite has two solar arrays. Each array has an area of 5m². At the beginning of life each of the solar sails generate 4kW of electrical power, which falls to 3.6 kW at the end of the satellite's useful lifetime. 1 kW of power is needed for housekeeping (running the satellite systems) and 3 kW is devoted to the telecommunication system. a. Calculate the efficiency of the solar cells at beginning of life. Assume an inci- dent solar power of 1.36 kW/m2, and normal incidence of sunlight on the sails. b. Caleulate the efficiency of the solar cells at end of life. E lfone of the solar sails fails and produces no power, how much power is avail- able to the telecommunication system.
A 30 x 30 x 30 m room is installed with a fan designed to supplyair every second. If the losses due to ducting is measured at0.15 m, determine the required power of the fan in Watts.
If a PV cell will produce 7-9 watts per square feet, suppose if the rooftop area is 19ftX7 ft then how much power on average it will produce? Also, calculate the energy produced for one year if the effective time of utilisation is 6.5 hours?

SEE MORE QUESTIONS

Recommended textbooks for you

Introductory Circuit Analysis (13th Edition)

Electrical Engineering

ISBN:

9780133923605

Author:

Robert L. Boylestad

Publisher:

PEARSON

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:

9781337900348

Author:

Stephen L. Herman

Publisher:

Cengage Learning

Programmable Logic Controllers

Electrical Engineering

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

Introductory Circuit Analysis (13th Edition)

Electrical Engineering

ISBN:

9780133923605

Author:

Robert L. Boylestad

Publisher:

PEARSON

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:

9781337900348

Author:

Stephen L. Herman

Publisher:

Cengage Learning

Programmable Logic Controllers

Electrical Engineering

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

Fundamentals of Electric Circuits

Electrical Engineering

ISBN:

9780078028229

Author:

Charles K Alexander, Matthew Sadiku

Publisher:

McGraw-Hill Education

Electric Circuits. (11th Edition)

Electrical Engineering

ISBN:

9780134746968

Author:

James W. Nilsson, Susan Riedel

Publisher:

PEARSON

Engineering Electromagnetics

Electrical Engineering

ISBN:

9780078028151

Author:

Hayt, William H. (william Hart), Jr, BUCK, John A.

Publisher:

Mcgraw-hill Education,

SEE MORE TEXTBOOKS

3. An electric radiator is required to dissipate 2 kW when connected to a 230 V supply. If the cols of the radiator are of wire 0.028 inch in diameter having resistivity of 60 micro-ohm-cm, calculate the necessary length of the wire in meters. (Solution) 10.35 m 20.25 m O 6.24 m O 17.31 m