A fluorescent tube light consumes 40 w for the tube and 10 w for choke. If the lamp operates for 8 hours a day for 300 days in a year, calculate the total energy cost per annum if the energy cost is rs.3/- per kw
Answers
Answer:
The total energy cost per annum will be Rs 360
Explanation:
Given cost of 1 Kwh = Rs 3
Total power consumption in a tubelight = 40 + 10 = 50 w = 0.05 Kw
Number of hours the tubelight operates in a day = 8 hrs
=> Total Kwh consumed in a day = Kilowatts x Hours
= 0.05 x 8
= 0.4 Kwh
Total number of days in a year the tubelight operates = 300
=> Total Kwh consumed in a year = 0.4 x 300
= 120
=> Total cost of tubelight operation = 120 x 3 = 360
Hence the total energy cost per annum will be Rs 360
A fluorescent tube light consumes 40 w for the tube and 10 w for choke. If the lamp operates for 8 hours a day for 300 days in a year, calculate the total energy cost per annum if the energy cost is rs.3/- per kw
Consumption of tube light = 40w + 1ow = 50 w
Consumption in a day(8hr) = 8 * 50 = 400 w
Consumption in 300 days = 300 * 400 = 120000 w
1kw = 1000w
120000w = 120 kw
Energy cost = rs 3 per kw
Total Energy cost = 120 * 3 = Rs 360