12.
Three bulbs of 100 W each, a fan of 1500 W and an electric iron of 1100 W are
daily operated for 5 hours, 7 hours and 2 hours respectively. What will be the total
electrical consumption expenses of these appliances for the month of April. [The
electrical company charges 5* /unit]
(1) 1500 (2) *1080 (3) 2130 (4) 2080
Answers
Answered by
3
Answer:
The total number of hours=2*30=60
Total energy consumption=60*1,1= 66 kWh
Energy cost = 66*5= Rs 330
It is to be noted that the iron has a thermostat, which trips when the set temperature is reached. The thermostat also resets when the temperature falls. This results in a duty cycle with an “on” period followed by an “off” period. This would result in a substantially lower energy consumption.
Similar questions