Question

. In a premises 5 bulbs of each 60 W, 2 fans each of 60 W, 3 AC each of 1.5 KW are used for 4 hours per day. The total energy consumed in 30 days is

3 points

(a) 5844 Joules

(b) 5844 Kilo Watts

(c) 584.4 Kilo Watt-hour

(d) None of these

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Answer 1

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

×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