8. A motor delivers 2hp and receives 1.8 KW of energy. Find its efficiency. 9. A generator receives 7hp and supplies 20A at 220V.Find the power supplied by the generator and its efficiency. 10.A 4hp lathe motor runs 8hrs/day. Find the electric energy in kilowatt-hours used in a day,

Q: (9) The coefficient of performance of a residential heat pump is 1.95. If the input power to this…

A: The coefficient of performance of a pump is the ratio of heat produced in the pump to the amount of…

Q: A family consumes 15×103 kg of hot water per month and uses an electrical resistance heater to raise…

A:

Q: 41. a. In 10 h an electrical system converts 1200 kWh of elec- trical energy into heat. What is the…

A: a. The energy of the given system is 1200 kWh The time taken by the system is 10 h.  The power and…

Q: A 60 W bulb is on for 10h. a. What is the energy used in watt-seconds? b. What is the energy…

A: We are authorized to answer one question at a time since you have not mentioned which one you are…

Q: 53

A:

Q: 28. Energy is sold by the joule, but in common practice, bills for electrical energy are expressed…

A:

Q: How much will I pay if I used a 5 hp air-conditioning unit for 1 hour? Assume that the consumption…

A: First we will find out total consumed power then we will find out cost .

Q: Load 2390 tums 710 turrs 28 VAC 350 2

A: Given circuit, Where, Primary number of turns, N1=2390 turns Secondary number of turns, N2=710…

Q: Find the input, output, losses, and/or efficiency as appropriate for each of the following cases:…

A: WE KNOW THAT   EFFICIENCY = POWER  OUTPUT POWER INPUT×100% EFFICIENCY=POWER OUTPUTPOWER OUTPUT…

Q: An electric motor drives a mechanical load taking 18.8 amperes from a 230V source. a) Calculate the…

A:

Q: In a Pumped Hydro storage system, if 1000 kg of water is raised 100 m it will store 0.2725 kWh of…

A: Hydropower generation is a very safe and environment-friendly power generation method. it converts…

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: 96.7% effici

A:

Q: What is the total cost of using all of the following at P50.00 per kWhr? a. A 1200w toaster for…

A: Given, The total cost of using all of the following at P50.00 per kWhr a. A 1200w toaster for 30min…

Q: A power station generate 25 MW wth fuel of 3000 k.calorific/ kwh. The fuel has an calorific value of…

A: Electricity is generated by conventional and renewable energy resources like solar, coal, nuclear,…

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

A:

Q: The thermal efficiency and electrical efficiency of a steam power station are 30 % and 92 %…

A:

Q: The generator of a motor-generator set is delivering its full-load output of 10 kilowatts.  The…

A: The solution is given below

Q: Medupi power station uses coal of calorific value of 5880 kcal/kg to generate electricity.They use…

A: Most of human energy requirement is meet by generating electrical energy. Once electrical energy is…

Q: if the power consumption is 1200 kwh the DC power in kw, is: Use pv module with 300w power output,…

A: if the power consumption is 1200Kwh the DC power in Kwp is: use PV module with 300w power output and…

Q: 1.A 2Hp motor operates at an efficiency of 80%. What is the power input in watts? If the applied…

A:

Q: 1000MW thermal plant has an overall efficiency of 34%. If the coal used has a heating value of…

A: In this question we will find coal consumption of given plant per hour with given data..

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: How much energy does a 3-hp motor deliver in 10 minutes? Assume that 1 horsepower = 746 W.

A: Given, Power, P=3 hpTime, t=10 min Also, 1 hp =746 WAnd,1 min =60 sec

Q: A hydro station generate 255000 kwh for one day. The water discharge of the station is 43 cubic…

A: Above given question is based on Hydro power station. A hydro power plant uses the kinetic energy of…

Q: If vg = 1 kV and ig = 5 mA, find the value of R.

A: Given values areVg=1 KVOHig=5mA

Q: What is the cost of running it for one year if electricity

A: Given, An electric water heater consumes 5 kW for 2 hours per day. So per day energy consumption is…

Q: A generator which is 80% efficient delivers 50 A at 220 V. What must be the output of the diesel…

A: The output of the generator is, P=VIP=220V×50 AP=11000 WP=11 kW

Q: 1. Someone watches TV on average 4 hours each day. The TV is connected to a 220 V voltage so that…

A: Note: As per the  guide lines of the bartleby we are supposed to solve one question, when they are…

Q: 4. A 5kW (shaft power) DC motor has 200 W of electrical losses and 3 W of mechanical losses. Which…

A: The solution is given below

Q: What is the cost of using a 10HP motor for two hours if the rate is P50.00 per kWhr ? If…

A: Given, Power rating of motor = 10 Hp                                     = 10×0.75=7.5 kW Operating…

Q: how much will i pay if i used a 5hp air-conditioning unit for 1 hr? assume that the consumption rate…

A:

Q: The power deiívered by a load is 500 joules per second (J/s). How much the horse power (hp). The…

A: According to the given question, it is required to calculate the power delivered into horsepower…

Q: What is the cost of using a 5Hp motor for two hours if the rate is P50.00 per kWhr

A: Given, Rating of motor is 5 HP  The motor in operation for 2 hours. Rate of operation is P50.00…

Q: The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is…

A: Given: Expected value or True value of voltage, VT=80 V Measured value of voltage, Vm=79 V

Q: 3. A motor with an efficiency of 87% is required to deliver 3kW of power for an hour. The electrical…

A:

Q: station is delivering its full output. 3. A 65,000 kW steam power station uses coal of calorific…

A: 3) Given data : Power, P= 65,000 kWLoad Factor = 40% = 0.4

Q: A 1.8 kW electric heater has a resistance of 18 Q and it is running for 2.5 hours. Calculate the…

A: Power of heater P=1.8kW Resistance R=18ohm Running time 2.5Hours Find the energy and current?

Q: 7. Ten electric heaters, each taking 200 W were used to dry out on site an electric machine which…

A:

Q: Q1/A-What is the total cost of using the following at 4c per kilowatthour? a) 600 W air conditioner…

A: we have given  a) 600 W air conditioner for 8 h  b) 2800 W clothes dryer for 45 min c) 850 W coffee…

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: ten electric heaters, each taking 200 watts were used to dry out on site on electric machine which…

A: Given that  Power rating of each heater  is 200 w Time of usage t= 60hrs V= 240 v Cost C =…

Q: The specific fuel consumption by a thermal power station is 0.75kg/Kwh. The units generated for a…

A: In this question we need to find a fuel consumption per day by station

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

A: According to question: Heat equivalent of 1KWH is calculated as…

Q: A hydro station generate 255000 kwh for one day. The water discharge of the station is 43 cubic…

A: Given: For a hydroelectric power station, η=70% Energy generated in one day, E=255000 kWh Water…

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: A 100hp motor (efficiency 85%) is working at 80% capacity and is used for 50% of the plant operating…

A:

Q: a) A motor that drives an 80KW generator has an efficiency of 90%. What should be the full-load HP…

A:

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…

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.