A house has the following appliances: Electrical Oven rated at 5kW (efficiency of 60%) Electrical Space Heater rated at 1.5kW (efficiency 60%) What is the efficiency (in %) of all the appliances combined?

A house has the following appliances: Electrical Oven rated at 5kW (efficiency of 60%) Electrical Space Heater rated at 1.5kW (efficiency 60%) What is the efficiency (in %) of all the appliances combined?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 34RQ: What is the Btu/hour output of an electric heater rated at 15 kilowatts? a. 51.15 Btu/hour b. 51,150...

See similar textbooks

Related questions

Q: A poultry hatchery has 500 heat lamps (each rated at 250 watts) that operate 24 hours a day.…

A: Given information: The number of heat lamps N=500 The power rating of each lamp P=250 W=2501000…

Q: Q4// A supply company offers the following alternative tariffs @) Standing charges of Rs 75 per…

A: The solution can be achieved as follows.

Q: there are 240 square meters of floor area in a house that contains an electric range rated as 12 kW…

A: total floor area =240 square meter electric range =12 kW electric dryer =5000 W

Q: A family of five is planning to install solar panels on the roof of their home to help reduce the…

A: According to the question we have to comment on the need to buy electricity from a supplier or not…

Q: A community requires 60 kW of power output to meet their daily electricity needs. If the site survey…

A: This problem is belongs to hydro power plant

Q: Estimate the cost of cooking a turkey for 3.2 hours in an oven that operates continuously at 16.6A…

A: Energy = voltage ×current ×time in hours wh. Cost of the energy = no.of kwh consumed × cost per Kwh.…

Q: An electric radiator is required to dissipate 1 kW when connected to a 220 V supply. If the coils of…

A: GivenPower dissipated by radiator=1KWsupply volatge=220 vdiameter of wire…

Q: house has the following electrical appliance usage: - One 32 Watt fluorescent lamp with electronic…

A: The solution can be achieved as follows.

Q: A television set having a power rating of 120 W and electric lawnmower of power rating 1 kW are both…

A: we need to determine most appropriate fuse for each appliance.

Q: (a) Household appliances need to be individually fused to keep them safe in case of fluctuations.…

A: A list of household appliances are given in the question. We need to determine the rating of fuses…

Q: Find the value of Rv (in ohms) needed for a full-scale reading of 50 V.

A: In this question Find the value of Rv (in ohms) needed for a full-scale reading of 50 V

Q: Electric hairdryer consumes 500 W of power. The voltage supplied by wall outlet is Vrms = 84.85 V.…

A: Given, Power consumed by electric hair dryer P=500 W. Voltage supplied by wall outlet Vrms=84.85 V.…

Q: If the battery of newly purchase mobile phone has a capacity of 5,800 mAh. Compute the approximate…

A: The battery is an energy storage device that stores the energy for a long duration of time. In the…

Q: A hotel lobby is required to have an illumination of 117 Lux. 2 Chandeliers shall place in the said…

Q: Under insolation conditions of 500 W/m2 (direct sunlight), and 10% solar cell efficiency (defined as…

A: Since vehicle is running at half power so power = 20 hp 20 hp = 20 * 745.7 = 14914 W…

Q: An electric stove having a rating of 3kW is use to boil a 10Li of tap water (Initially at 200C and…

Q: A television set having a power rating of 120 W and electric lawnmower of power rating 1 kW are both…

Q: Let us given a 12V, 60 Ah car battery. If the total energy of the battery reduces to 40% or less of…

A: Given: A 12V, 60 Ah car battery. Current drawn by alarming system is 100 mA. Battery cannot supply…

Q: Problem 1. If electric energy costs 3 $/kilowatt-hour, calculate the utility bill for one month for…

A: In this question we need to find a utility bill for one month of the given load

Q: 33.A hoist powered by a 20 hp motor is used to raise a 500 kg bucket of concrete to height of 80 m.…

Q: Please help with the following: Do the following to compare the wattage capacity of the power…

A: (1) The recommended wattage capacity for a power supply for this PC is 452 Watts.

Q: A television set having a power rating of 500 W and electric lawnmower of power rating 1 kW are both…

Q: Q1) A. Answer the following question: 1. What is the reciprocal of resistance? 2. An electric heater…

Q: give the allowable ampacity for a 16/3, 14/3, and 12/3 SJ cord

A: SJ cord is a power cable, generally used in small applications to supply power to appliances and…

Q: A family of five is planning to install solar panels on the roof of their home to help reduce the…

A: The most human energy requirement is met by generating electrical energy. Once electrical energy is…

Q: An electric radiator is required to dissipate 1 kW when connected to a 220 V supply. If the coils of…

A: Given that for an electric radiator: Power dissipated (P) = 1 kW; Supply voltage (V) = 220 Volt;…

Q: A certain appliance uses 350 W. If it is allowed to run continuously for 24 hrs, how many…

Q: 4. Typical interior LED lightbulbs have a power rating of 19 W. These bulbs have a brightness of…

A: Given: Power rating of LED bulb, P=19W Power rating of filament bulb, P=100W Brightness of 1 bulb or…

Q: Compute the cost per hour at 7.50 pesos per kwh of electrifying the house. If the appliances inside…

Q: Find the resistance of a lightbulb whose rated 60 W, 220 V.

A: Given, a lightbulb has rated power = 60 W and rated voltage = 220 V' Let the resistance of the…

Q: A home with no basement or attic has a footprint of 800 sq ft and two stories. Each story is 9 ft…

A: we have to find the electricity cost of ventilation for which we have to calculate the energy

Q: A walkman has 4 –AA batteries. The combination has a capacity of 200 watt-sec. How long will it take…

A: Given, A Walkman has 4- AA batteries. The combination has a capacity (C) = 200 watt-sec…

Q: A PV system is using 80 W, 12 V panels and 6 V, 155 Ah batteries in an area of unshaded sunshine.…

A: The solution is as follows.

Q: Find the current drawn by a de electric motor that delivers 2 hp while operating at 85 percent…

A: In this question we need to find current drawn by a DC motor .

Q: A 150 Ibm human total footprint is 0.9 square feet when the person is wearing boots. If snow can…

A: It is given that: Mass=m=150 lbmPressure=P=1 psi=1 lbf/in2=32.174 lnm-ft/s2/in2Total foot print…

Q: 2. A tank initially contains 1000 gallons of fresh water. Brine containing 3 lbs/gallon of salt…

A: It is given that: intial quantity of fresh water=1000 gallons3 lbs/gallon of salt flows at 2…

Q: A mobile phone battery has a capacity of 10 Ah. If the mobile phone requires 10 mW power to run…

A: If R ohm corresponds to the load of the mobile phone during smooth run and i(t) A is the…

Q: A house has 5 fans of 70 W each that operate for 16 hours a day and one washing machine of 2000 W…

A: Given, A house has 5 fans of 70 W each that operate for 16 hours a day One washing machine of 2000 W…

Q: 2. A student leaves a 5 amp stereo on in their car and drains the 10000 coulomb battery. How long…

A: So according to the question Student uses 10000 coulomb Also the stereo uses 5 amp.

Q: What is the total cost (in cents) of using the following at 9¢ per kilowatt-hour? a. 860 W air…

Q: Q2) An electric heater consumes 1.8 MJ when connected to a 250V supply for 30 minutes. Find the…

A: The solution can be achieved as follows.

Q: A body at a temperature of 50° F is placed in an oven whose temperature is kept at 150° F. If after…

A: Rate of heat gained is proportional to the difference between the surrounding's temperature and…

Q: solar

A: Answer Solar panels (also known as "PV panels") are used to convert light from the sun, which is…

Q: Solve the following problems below. Show complete solution. 1. A CFL or compact fluorescent lamp…

Q: 1. A home uses twenty 60W, 2% efficient incandescent bulbs, which are all 'on' anaverage of 4 hours…

A: We are authorized to answer one question at a time. We are answering the first question (1 a,b).…

Q: A 300W electric heater at 110-V with a safety fuse in the circuit handling 15A of current. How many…

Q: . A water heater has a resistance of 5.3 ohms and takes 43.5 amp when in operation. If it is in…

Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

A house has the following appliances:

Electrical Oven rated at 5kW (efficiency of 60%)

Electrical Space Heater rated at 1.5kW (efficiency 60%)

What is the efficiency (in %) of all the appliances combined?

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 with 1 images

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

An electric lift truck is powered by a dc motor connected to a 110 V battery. The truck exerts 200 lbs pull while moving at 7mph. If the overall efficiency of the motor and drive mechanism is 75%, what is the current drain on the battery ?
Compute the cost per hour at 7.50 pesos per kwh of electrifying the house. If the appliances inside the house are an electric fan with resistance of 25 ohms, television which requires 5 ampere of current to start, water dispenser with resistance of 3 ohms, all connected to 220V and on for 8 hrs.
A family of five is planning to install solar panels on the roof of their home to help reduce the cost of electricity and save energy to help the environment. The family plans to install 10 panels, each with a power rating 600W. On average, a solar panel can produce electricity for 4.5 hours daily. Each person in the family uses electrical energy at an average rate of 2kilowatt-hour per day. Will they still need to buy electricity from an electrical energy supplier? Explain your reasoning.
A microwave oven is connected to a 250V supply for 2 hours with a power rating of 1.8kW. Find the total electrical energy consumption and the current rating of the microwave oven?
Design a 25V solar PV panel system that can power a home that requires two 30-Watt lamps and four 15-Watt fans for 6 hours daily if the factors for the solar panel generation and the total energy losses respectively are2.92 and 1.3. Take the rating of the available solar PV cell as 5V, 5W
A family of five is planning to install solar panels on the roof of their home to help reduce the cost of electricity and save energy to help the environment. The family plans to install 10 panels, each with a power rating 600W. On average, a solar panel can produce electricity for 4.5 hours daily. Assume the average cost of electricity is 5.5 cents per kilowatt-hour. How much money will the family save in a year on their electrical energy bill?
A television set having a power rating of 120 W and electric lawnmower of power rating 1 kW are both connected to a 250 V supply. If 3 A, 5 A and 10 A fuses are available state which is the most appropriate for each appliance.
Under insolation conditions of 500 W/m2 (direct sunlight), and 10% solar cell efficiency (defined as the ratio of electrical output power to incident solar power), calculate the area required for a photovoltaic (solar cell) array capable of running the above vehicle at half power. Note: The vehicle is driven by a motor of 40 hp.
there are 240 square meters of floor area in a house that contains an electric range rated as 12 kW and an electric dryer rated at 5000 watts. Calculate (a) the general lighting required,
Calculate the systems efficiency of a refrigerator given the following; Mining & Transport Efficiency(97%), Coal Plant Conversion Efficiency (35%), Transmission Efficiency (93%) and Cooling Efficiency (50%).
Estimate the cost of cooking a turkey for 3.2 hours in an oven that operates continuously at 16.6A and 183V. If the energy is purchased at an estimated price of 7.8 dollar cents per kilowatt hour.
Electrical consumption = 76.4 kWh Based on the above home electrical consumption, if the home will be off-grid and powered by a solar energy, what will be the size of solar panel needed to for it? Show solution and explanation