) What is the importance of determining power ratings of the electrical appliances and devices we use every day? in 5 senteces
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Q: An electric heater is used to boil 5.76 L of water in 20 minutes. What is the Appropriate kilo-watt…
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3.) What is the importance of determining power ratings of the electrical appliances and devices we use every day? in 5 senteces
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- What is the Btu/hour output of an electric heater rated at 15 kilowatts? a. 51.15 Btu/hour b. 51,150 Btu/hour c. 5115 Btu/hour d. none of the aboveWhat would the MPGe of an otherwise identical vehicle be if running on an electric motor, if you pay 15 cents per kilowatt-hour to charge it? Assume the price of gasoline is $2.79/gallon.A four-unit apartment has the following electric ranges, a 15kw, a 14 KW, a 10 kilowatt and a 9KW. What is the kilowatt demand added to the service of these RANGES?
- 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?A consumer is using 250 units per month. If he is charged at a block rate tariff of 20 baisa for the first 100 units and 25 baisa for the remaining units, then the monthly electricity billThe cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is 8.8¢/kWh, and the clothesdryer is used for 700 hours in a year, what is the power rating of the clothes dryer?
- An electric heater is used to boil 5.76 L of water in 20 minutes. What is appropriate kilowatt rating of the electric heater? Ans. 2 kWHow 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 single-story house has average kilowatt-hour consumption per month is 4.75 kWh/m2/day. How many solar panels do you need to cover its electricity demands? Use a 250Watt solar panel with and a derate-factor of 85%.
- Suppose that the electricity consumption in your home last month was 354 kWh. In your contract with the electricity company, you agreed to pay 11.3 cents per kWh. If you also have to pay a regular fixed charge of $15.63, determine the total amount due on your electricity bill.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?1. An appliance draws 1A of current when plugged to a 220V outlet. It was further measured that the current lags the voltage by 32 degrees. What is the power factor of the device? (2 decimal places)
