a microwave oven draws 10 amps from a 115 volt source while it is on. If...
a microwave oven draws 10 amps from a 115 volt source while it is on. If the microwave oven is used every day for 8 minutes each day, what is the annual cost for the electricity to power the microwave oven? Assume energy costs 12 cents per kilowatt-hour.
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a microwave oven draws 10 amps from a 115 volt source while it
is on. If...
"A continuous electric current of 2,000 amps is to be transmitted from a generator to a...
"A continuous electric current of 2,000 amps is to be transmitted from a generator to a transformer located 200 feet away. A copper conductor can be installed for $5.8 per pound, will have an estimated life of 23 years, and can be salvaged for $0.8 per pound. Power loss from the conductor will be inversely proportional to the cross-sectional area of the conductor. The power loss in one hour may be expressed as 6.222/A kilowatt, where A is the cross-sectional...
2. The first two columns of the table show the demand schedule for electricity from a...
2. The first two columns of the table show the demand schedule for electricity from a coal-burning power station; the second and third columns show the power station's cost of producing electricity. The marginal cost of pollution created is equal to 6 cents per kilowatt th a) With no pollution control, what is the quantity of electricity produced, the price of electricity and the marginal extermal cost of the pollution generated? (5 marks) b) Suppose that the government levie ollution...
Section I: First Order Systems 1) A microwave oven is used to heat a cylindrical glass...
Section I: First Order Systems 1) A microwave oven is used to heat a cylindrical glass beaker completely full of water. The magnetron tube generates 800 watts of thermal power, all of which is absorbed by the water. The glass beaker sits on a thermally insulated plate. As the microwaves increase the temperature of the water, the beaker temperature will also increase due to conduction and convection from the Mode Stirrer Wave Guide Magnetron Tube (source of radiation) Oven Cavity...
Need help with this please Lab 14 Electricity Bill Worksheet Background knowledge. The power of an...
Need help with this please
Lab 14 Electricity Bill Worksheet Background knowledge. The power of an electrical appliance is measured in watt (W). One watt is a measure of the energy used up in one second. The unit used for calculating power consumption is the kilowatt-hour (kWh). In order to calculate power consumed by an electrical appliance, we first convert the power to kilowatt (kW). For example, 800 W=0.8 kW, 2000 W = 2.0 kW and so on. One unit...
4. For an energy source with constant energy production and no operating cost, the levelized cost...
4. For an energy source with constant energy production and no operating cost, the levelized cost of energy (LCOE) per kilowatt hour (kWh) can be calculated as: annualized capital cost annual kWh production The annualized capital cost is like a mortgage payment, an annual cost that includes paying both the principle and interest (or opportunity cost of capital) over the life of a project. This can be calculated as: Annualized capital cost = K where K is the capital cost,...
a household refrigiratotor Problems 15 and 16 are based on the following description A household referater...
a household refrigiratotor
Problems 15 and 16 are based on the following description A household referater runs 20 minutes in every hour and removes heat from the food compartment during this running time 1200 The COP of the refrigerator is 2.1. The power the refrigerator draws when running in kW is closer to 0.16 0.23 O 066 0.02 0.00 0.27 2.1 1 pts Question 16 Assuring a cost of electricity of 0.10 $/kWh, the cost in $ to operate this...
Problem 6-30 (algorithmic) Question Help * Two electric motors are being considered to drive a ce...
Problem 6-30 (algorithmic) Question Help * Two electric motors are being considered to drive a centrifugal pump. Each motor is capable of delivering 100 horsepower (output) to the pumping operation. It is expected that the motors will be in use 2,500 hours per year and the MARR-8% per year. (1 hp 0.746 kW) a. If electricity costs SX per kilowatt-hour, calculate the annual cost of electrical power for each motor b. What cost of electricity (S/kWh) makes the two pumps...
A small heater can be created by connecting a 10-ohm resistor across a 24-volt battery. Assume...
A small heater can be created by connecting a 10-ohm resistor across a 24-volt battery. Assume the battery is an ideal 24-volt potential source, and that any wires used to connect the battery to the resistor are also ideal and have negligible resistance. Part A) Calculate the power dissipated as heat by this circuit. (Answer in Watts) Part B) 4.18 Joules of energy are required raise 1.0 mL of water by 1∘ C. We wish to modify our 24-volt heater...
12.5 x 10J c) How long will it take to heat a room from 10 Cto2Cif...
12.5 x 10J c) How long will it take to heat a room from 10 Cto2Cif the heater consumes d) How many kilowatt-hours of electricity are used during the time calculated in part (c)? e) What is the cost (with electrical energy at 25 cents per kWh) of running the heater? 6. A metal wire has a resistance ofB1 Qunder coom temperature conditions of20°c)When the wire is he esistance increases by0.70 )What is the temperature coefficient of resistivity of this...
Need helps on parts B, C, E,and F Costs of installing rooftop solar PV : Calculate...
Need helps on parts B, C, E,and F Costs of installing rooftop solar PV : Calculate out-of-pocket costs and payback time for a rooftop solar installation. Assume that this PV system measures 6 m x 5 m and that the panels are 20% efficient. (a) Peak power rating: The solar industry describes the “peak wattage” of a PV system as its power output at a hypothetical, industry-standard irradiance of 1000 W/m2. What would be the peak wattage (in W) of...
2. The first two columns of the table show the demand schedule for electricity from a coal-burning power station; the second and third columns show the power station's cost of producing electricity. The marginal cost of pollution created is equal to 6 cents per kilowatt th a) With no pollution control, what is the quantity of electricity produced, the price of electricity and the marginal extermal cost of the pollution generated? (5 marks) b) Suppose that the government levie ollution...
Section I: First Order Systems 1) A microwave oven is used to heat a cylindrical glass beaker completely full of water. The magnetron tube generates 800 watts of thermal power, all of which is absorbed by the water. The glass beaker sits on a thermally insulated plate. As the microwaves increase the temperature of the water, the beaker temperature will also increase due to conduction and convection from the Mode Stirrer Wave Guide Magnetron Tube (source of radiation) Oven Cavity...
Need help with this please
Lab 14 Electricity Bill Worksheet Background knowledge. The power of an electrical appliance is measured in watt (W). One watt is a measure of the energy used up in one second. The unit used for calculating power consumption is the kilowatt-hour (kWh). In order to calculate power consumed by an electrical appliance, we first convert the power to kilowatt (kW). For example, 800 W=0.8 kW, 2000 W = 2.0 kW and so on. One unit...
4. For an energy source with constant energy production and no operating cost, the levelized cost of energy (LCOE) per kilowatt hour (kWh) can be calculated as: annualized capital cost annual kWh production The annualized capital cost is like a mortgage payment, an annual cost that includes paying both the principle and interest (or opportunity cost of capital) over the life of a project. This can be calculated as: Annualized capital cost = K where K is the capital cost,...
a household refrigiratotor
Problems 15 and 16 are based on the following description A household referater runs 20 minutes in every hour and removes heat from the food compartment during this running time 1200 The COP of the refrigerator is 2.1. The power the refrigerator draws when running in kW is closer to 0.16 0.23 O 066 0.02 0.00 0.27 2.1 1 pts Question 16 Assuring a cost of electricity of 0.10 $/kWh, the cost in $ to operate this...
Problem 6-30 (algorithmic) Question Help * Two electric motors are being considered to drive a centrifugal pump. Each motor is capable of delivering 100 horsepower (output) to the pumping operation. It is expected that the motors will be in use 2,500 hours per year and the MARR-8% per year. (1 hp 0.746 kW) a. If electricity costs SX per kilowatt-hour, calculate the annual cost of electrical power for each motor b. What cost of electricity (S/kWh) makes the two pumps...
12.5 x 10J c) How long will it take to heat a room from 10 Cto2Cif the heater consumes d) How many kilowatt-hours of electricity are used during the time calculated in part (c)? e) What is the cost (with electrical energy at 25 cents per kWh) of running the heater? 6. A metal wire has a resistance ofB1 Qunder coom temperature conditions of20°c)When the wire is he esistance increases by0.70 )What is the temperature coefficient of resistivity of this...
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