4. In a premise 5 bulbs each of 100 W, 2 fans each
of 60 W, 2 A.Cs each of 1.5 kW are used for 5 h
13
per day. Find :
(a) total power consumed per day,
(b) total power consumed in 30 days,
(c) total electrical energy consumed in 30 days,
(d) the cost of electricity at the rate of 6-25
per unit.
Ans. please
Answers
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Answer:
Power consumed by :
5 bulbs=5×100=500W
2 fans =2×60=120W
2 A.C =2×1.5×1000=3000W
(b) Total power consumed per day=3620W
(b) Total power consumed in 30 days =
1000
3620 /1000 ×30=108.6kw
(c) Electric energy is used for 5 h per day.
Total electrical energy consumed in 30 day.
(d) Cost of electricity =P×t=108.6×5=543kWh
=543×6.25=Rs 3393.75
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