10. In 10 h an electrical system converts 1200 kWh of electrical energy into heat. a. What is the power level of the system? b. If the applied voltage is 208 V, what is the current drawn from the supply? c. If the efficiency of the system is 82%, how much energy is lost or stored in 10 h?

10. In 10 h an electrical system converts 1200 kWh of electrical energy into heat. a. What is the power level of the system? b. If the applied voltage is 208 V, what is the current drawn from the supply? c. If the efficiency of the system is 82%, how much energy is lost or stored in 10 h?

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: We were asked to calculate the consumption of each person's residence, so let's assume that everyone…

A: In this question we will find energy consumption of each person residence.....

Q: 000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consump-…

A: Electricity generation=65,000 kW Calorific Value=15,000 kcal Coal consumption per kWh=0.5 kg Load…

Q: An electric motor in used to pull a cord which is connected to a weight The upward velocity of…

Q: A friend brought a 960 W electric coffee maker from Europe, designed to work with a 240 V. power…

A: a) In our problem the coffee maker is designed to work with 240v supply but we have 120v supply…

Q: no. 000 AWG wire is 100 meters long. For no. 000 wire, it has a wire resistance of 0.0618 ohms per…

A: In this question AWG wire is given...We have to find out power loss due to current and due to this…

Q: ) What is the importance of determining power ratings of the electrical appliances and devices we…

A: 1) based on the power rating of the device, we can take the electricity connection. 2) Besed on the…

Q: Suppose that the electricity consumption in your home last month was 354 kWh. In your contract with…

A: Given data, Consumed Units=354kWh Rate=11.3 cents per kWh Fixed Charge=$15.63

Q: 120 V.

A: Given circuit shown

Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…

A: Given: The cost to operate a clothes dryer for a year is $80.25. The rate for electrical energy is…

Q: A household has the following appliances and average daily usage : • 1 hp air conditioning unit-8hrs…

A: The household consists of various types of load each of them is working at different power ratings.…

Q: Q1 / A steam power plant with a power output of 150 MW consumes coal at a rate of 60 tons/h. If the…

Q: Electricity costs $0.10 per kWh. If an electric water heater has an efficiency of 95 %, what is the…

A: Given Data: Electricity cost = $0.10 per kWh heater efficiency = 95 %

Q: A thermal power station spends RO 3 million per annum for coal used in the station. The coal has a…

A: In this question we need to find a average load on the station.

Q: A small business operates three pieces of equipment for nine hours continuously per day for six days…

Q: 10 Ω 5 mF 20 mH ww www Vs = 50 cos 100t V

A: An a.c circuit differs from a d.c circuit in many respects. First, in a d.c circuit we consider…

Q: If the fuel consumption per day by a station is 2000kg and the units generated per day by the…

Q: , calculate the power absorbed by a load of 10 c

A: A dc shunt generator has, No.of poles (p) =4, speed (N) =900 rpm No.of conductor (Z) =400, Flux per…

Q: A Hydroelectric Plant is supplied from a reservoir having a capacity of 4.5 x 106 cubic meters with…

Q: 3. The devices in the cabin on a ship, their power and duration of use are given below. Air…

Q: When applying the general method of calculation for a dwelling unit, what is the feeder and service…

Q: What is the thermal efficiency of a coal fired thermal plant having a coal consumption of 0.48…

A: In this question we need to find thermal efficiency of a given power plant.

Q: 1. A steam power station has an overall efficiency of 25% and 0·5 kg of coal is burnt per kWh of…

A: 1) The given data's are, Overall efficiency is η=0.25, Coal burnt is 0.5 kg/kWh, The heat…

Q: A typical electric-powered car having a 6A, 18V battery was charged at constant current from 8am…

A: Given Data: V = 18 V I = 6 A Total time = 8am to 10pm = 14 hour

Q: A 65,000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal…

A: Given Load factor = 40%, supply = 65000 KW, coal consumption per KWh = 0.5 Kg, Calculating units…

Q: Efficiency 1000 J of electrical energy 350 J of heat 500 J of sound 150 J of movement

A: Efficiency: Efficiency of a system can be defined as the ratio of output to input or it can also…

Q: An electric motor has a rated power of 15 kW, running the engine for 12 hours. If the efficiency of…

A: Given, Rated power of electrical motor (Pout) = 15kW Running time(T) = 12 hours Efficiency = 89%

Q: The following data is available for a steam power station: Maximum demand = 25,000 kW; Load factor =…

Q: :Calculate the demand factor for a building with the following Electrical Loads Lighting = 367 w Air…

A: Given, The electric loads of a building are Lighting, 367 W Air conditioner, 6.7 kW Appliances, 4.8…

Q: In the circuit of Fig. 1, let v₁=40cos 1000t, Find the average power delivered to each resistor?…

A: The circuit diagram is shown below, Where,vs = 40 cos 1000t V

Q: 9. 100V 2000 500 1500 2000 500 Solve for the current supplied by the battery as shown.

Q: Which of the following is a primary source of energy ? a. Natural Gas b. Biomass c. Solar Energy…

A: The energy sources are classified in primary source of energy and the secondary source of energy

Q: How many calories are developed in 1.0 min in an electric heater which draws 5.0 A when connected to…

A: In this question, We need to choose the correct option What is energy in calories if Voltage V=…

Q: 1. The boiler, turbine, alternator efficiencies of a thermal power plant are 35%, 86% and 93%…

A: Given: ηboiler=35% or .35ηturbine=86% or .86ηalternator=93% or .93Value of heatind coal=12000…

Q: A household has the following power consumption: air conditioner: 5 kW, 7 h/day oven: 9 kW, 3 h/day…

A: Electrical devices consume electrical power. Electrical loads are defined in the terms of current…

Q: A 54.52-hp motor that has an efficiency of 90.72% is soon to be obsolete. It will be replaced by a…

A: Given Motor The output power of motor is P0=54.52 hpThe efficiencyη1=90.72 %η2=96.08 %The motor…

Q: A 68.01-hp motor that has an efficiency of 92.62% is soon to be absolete. It will be replaced by a…

A: Given Motor with output powerP0=68.01 hpIn case-1Efficiency η1=92.62 %In case-2Efficiency η2=97.93…

Q: How much electric energy in kilowatt – hour is delivered to an electric motor during 10 – hour…

A: In this question we need to find a How much will you pay if the cost is 8 pesos / K – watt hour.

Q: If an electric heater requires 23 A at 110 V,determinea. The power it dissipates as heat or other…

A: a. To determine the power dissipated by the heater: Power absorbed by the heater can be expressed…

Q: A. Find the current passing through the 10-ohm resistor and the average power absorbed by it…

A: The given circuit is shown with the mesh currents and the nodes as below,

Q: A thermal power station has an overall efficiency of 28% and 0.8kg of coal is burnt per kWh of…

A: Calorific value is the amount of heat energy in tha coal in 1 kg of coal. Overall efficiency is the…

Q: An appliance draws 1A of current when plugged to a 220V outlet. It was further measured that the…

A: In this question we will find power factor of circuit..

Q: A 60 MW thermal station has overall efficiency of 30%. If coal for the station has an energy of 6950…

Q: Q.2/ The electric heater consumes 1.8 MJ when connected to a supply of 225 V for 21 minutes. Find…

A: The electric heater consume 1.8 Mega Joules in 21 minutes that's why the power rating will be given…

Q: 3. A 65,000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal…

Q: A power station burn 0.5 kg of fuel per kwh. Assume the fuel has an calorific value of 7500…

A: A power station burn 0.5Kg of fuel per Kwh.Assume the fuel has an calorific value of 7500…

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

10. In 10 h an electrical system converts 1200 kWh of electrical energy into heat.
a. What is the power level of the system?
b. If the applied voltage is 208 V, what is the current drawn from the supply?
c. If the efficiency of the system is 82%, how much energy is lost or stored in 10 h?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 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

Determine the thermal efficiency of a steam power station given the following data: Coal consumption = 0.60 kg/ kWhHeating value of coal = 6600 kcal / kg
What is the thermal efficiency of a coal fired thermal plant having a coal consumption of 0.48 kg/kWh and the calorific value of coal used is 6200 kcal/kg?
A family consumes 15×103 kg of hot water per month and uses an electrical resistance heater to raise water temperature form 20oC to 55°C on average. Assume the cost of electricity is $ 0.01/kWh and the efficiency of the electric heater is about 93 percent due to the heat losses. (a) Determine the annual electricity bill due to water heating. (b) If the family installed a solar water heater (SWH) that supplies the required hot water for 8 months on average (the other 4 months account for cloudy days), what would be the annual saving?
A 65000-kW thermal power station uses coal of calorific value 15000 kcal per kg. if the coal consumption per kWh is 0.5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii) coal consumption per day.
A steam power station has a coal consumption of 0.54kg/kwhand a load factor of 50%. If the heating value of coal is 6400kcal/kg,determine the thermal efficiency, the energy generated per annum, and the coal consumption per annum. Maximum demand is 20,000kw.
Utility Electric Cost= Divide the yearly kWh by 12 to obtain the monthly kWh amount. Assume $0.20 per kWh utility cost and multiply it to obtain the amount. Use previous formulas to determine the cost ($.20/kWh) of each of these appliances of devices over a given period. 1. You take out a bagel and place it in the toaster for 5 minutes. The toaster uses 1050 watts/hour.
A person turns the shower on The electric hot water system and hot water delivery system are 75% and 65% The tap water temperature is 16.0 °C. The comfortable water temperature range is 40-48c. Current unit price of electricity is $0.274 per kWh. If 50.0 L of warm water was used for the shower, what is the difference in the cost if the shower used warm water at 40.0 °C and at 48.0 °C?
Given the two loads with the power rating:a.) Incandescent light bulb = 100 Wb.) LED lamp = 9 WCompute each of the monthly Peso consumptions and the savings of one over the otherwhere: operation hours = 9 hours/day, 30 days/month, P 9.35 / kWh
How many pounds of coal must be burned to keep one 100-watt light bulb lit for one hour? Assume the efficiency of the power plant is 35%, the transmission losses are 10% of the delivered power, and the heating value of coal is 12,000 BTU/lb.
A 54.52-hp motor that has an efficiency of 90.72% is soon to be obsolete. It will be replaced by a high efficiency motor which is 96.08% efficient. The motor operates 4,378 hours a year. Taking the cost of electricity to be P8.92 per kWh, compute for the annual savings due to the installation of the high-efficiency motor instead of the standard motor. Round your answer into two decimal places only.
If an electric heater requires 23 A at 110 V,determinea. The power it dissipates as heat or other losses.b. The energy dissipated by the heater in a 24-hperiod.c. The cost of the energy if the power companycharges at the rate 6 cents/kWh.
A 65,000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consumption per kWh is 0·5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii)coal consumption per day.