A 220V light bulb takes 0.45A current and operates 12H in a day. At the rate of Php 4.50 per kWh, determine the cost to operate the bulb for 30 days.
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- 1000W electric heater with 85% of efficiency is replaced by a 1000W electric heater with 95% efficiency. if heater is operated in a 8-hour shift for 5 days a week, what is the annual kwh savings?A utility company charges 8.2 cents/kWh. If a consumer operates a 60 W bulb continuously for 1 day, then how much the consumer will be charged?The 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?
- A gas furnace is used to provide space heating at an efficiency level of 82%. The gas is sold at $1.45 per therm. Question: How much money is needed if 1049.7 MBH is demanded? Hint: 1 MBH equals 1,000 btuhA 60 MW thermal station has overall efficiency of 30%. If coal for the station has an energy of 6950 kcal per kg, calculate coal usage per kWhA certain appliance draws 22 A across 25 V power source, how much will a spend if I use it for 8 hours, if the cost per kWh is Php 8.50?
- 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.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 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%.
- What 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 laptop computer consumes an average power of 20 W. The rechargeable battery has a voltage of 12 V and capacity of 5800 mAh. How long can the laptop run on a single battery charge?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)