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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- Convert 3000 W into the equivalent Btu/hour. Show all the steps.Assume you have one room it has 6 lamps and they are working 12 hours per day. If the unit price is 0.05 OMR, If the Energy bill for 20 days is OMR 7.94 fınd the wattage of each lamp.Discuss the challenges of Renewable Energy in 200 line
- 3) An incandescent lamp has an internal resistance of 96 and operates at 120 V. a) How much current will run through this lamp? b) How much power does this lamp draw? c) If this lamp operates for 180 minutes per day, every day of the year, how much energy (in kWh) does it use in a year? d) If electricity rates are 8 cents per kWh, how much does it cost annually to operate this lamp?Assuming a rate of 3 cents per kwh,how much will I pay for the loss with 7657.8881 watts due to the voltage drop for the whole month, when I used a the wire for 200 increasing hours?Question: A battery is charged from a constant dc source of 220 V through a chopper. The dc battery is to be charged from its internal emf of 90 V to 122 v. The battery has an internal resistance of 1 ohm for a constant charging current of 10 A. What is the range of duty сycle? Option 1: 0.55 to 0.7 Option 2: 0.2 to 0.4 Option 3: 0.45 to 0.6 Option 4: 0.3 to 0.5
- An electricity supplier company rates its customers as follows: Monthly cost 6 $ 0.02 $ / kWh for the first 250 kWh 0.07 $ / kWh for each additional kWh How much a customer will bill the electricity company if they use 2436 kWh of energy in a month.A 700 MW power plant consumes coal containing 1.23x 10^14 Joules of thermal energy every day. What is the efficiency of the power plant? O a. 35 % O b. 49 % O c. 56 % O d. 63 %Overall efficiency of a thermal plant is
- A power station burn 0.5 kg of fuel per kwh. Assume the fuel has an calorific value of 7500 k.calorific/kg. The overall efficiency is * 24.5 % 22.9 % 28.7 % 25.4 % O Non of themThe percentage of overall efficiency of thermal power plant is ±29% O +28% O +30% O +32%If the temperature is increased by 3 degrees Celsius then efficiency of power output in solar PV system will O a. increase by 3% O b. increase by 3% O c. reduce by 3% O d. reduce by 1.5%