Question

In a departmental store ,10 bulbs each of 60W , 4 fans each of 60W , 3 AcS each of 2kw are used for 8 hrs per day. Calculate:
a) total power consumed per day
b) total power consumed 30 days
c) total electrical energy consumed in 30 days
d) the cost of electricity at a rate of rs 4.00 per unit.

Answer 1

Given, as I am solving this one by one.

Bulb,

=> 60 W = 60/100 Kw = 0.6 Kw

=> Power of Bulb = Energy/Time

=> P = (0.6/8) Kwh

=> P = 0.075 Kwh

=> P = 10 x 0.075 = 0.75 Kwh

Fan,

=> 60 W = 0.6 Kw

=> Power of Fan = Energy/Time

=> P = (0.6/8) Kwh

=> P = 0.075 Kwh

=> P = 4 x 0.075 Kwh = 0.3 Kwh

ACs,

=> Power = Energy/Time

=> P = (2/8) Kwh

=> P = 0.25 Kwh

=> P = 3 x 0.25 = 0.75 Kwh

1). Total Power = (0.75 + 0.3 + 0.75) Kwh = 1.8 Kwh

2). Total Power in 30 days = ( 30 x 1.8) Unit

=> Total Power = 54 unit

3). Total Electrical Energy = 54 unit

4). Total Cost = Rs ( 4 x 54)

=> Total Cost = Rs 216



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Answer 2

Answer:

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