There are two 60 watt lamps and two 80 watt fans in a house. The lamps and fans run 5 hours daily. Find out the expense in a month if an unit of electricity costs Rs.4/-. (assume one mont = 30 days).

If in a house two 60 watt bulbs and two 80 watt fans run 5 hours daily then what shall be its monthly expenditure for electricity. Given 1 month = 30 days and cost of 1 unit electricity be Rs.7.

In a school there are 10 electric fans each of 40 W runs for 5 hours a day, 5 electric lamps each of 60 W runs for 3 hour daily. If the cost of each unit of electricity be Rs. 5, then calculate the monthly cost for electricity

In a house there are 10 lamps of 40 W each , 5 fans of 80 W each and a TV set of 80 W . They run for 6 hours a day . Find the consumption of electrical in a month of 30 days . What is its value in BOT unit ?

In a house 8 nos of 60 watt bulb runs for 10 hrs and a 1.5 kw electric iron runs for 15 mins. What is the amount of electric consumed. Cost of 1 unit electric is Rs. 6.

In house, 4Nos. Of 60W, 2 Nos. of 100W bulb and 2 Nos. of 40W Fan runs 5 hours daily. What will be its monthly electrical expenditure is one unit is cost Rs.6?

If 10 bulbs of 40 each and 3 of 100w each run on the average for 5 hours a day, calculater the monthly bill.1 bot unit costs Rs2. (1 month = 30 d)

There are six 40 W and two 100 W lamps , four 40 W fans and a 1000 W electric heater in a house .If in April , each lamp runs for 5 hours a day , each fan 15 hours a day and the heater 2 hours a day , what will be the electric bill for that month ? It may be supposed that the main supply voltage is 200 V and cost of each BOT unit = Rs. 1.50. Which one of the give three wires of rating 5 A , 10 A and 15 A will be appeopeiate for connection in the main switch ?

A house is fitted with 10 lamp rated 40w each, 5 fans rated 80 W each and a TV rated 80 W . If all the appliances work for 6 hours per day , how much electrical energy is consumed in a month ? What is its value in BOT unit ? (1month = 30 d )

A house is fiited with 2 lamps rated 60 w , 2 lamps rated 100 W each 3 fans rated 40 W each . If all the appliances run simultaneously by 200 V supply voltage , determine the magnitude of current that will be drawn from the mains . If each lamp works 5 h and each fan 15 H daily , calculate the monthly expenditure . ( 1 month = 30 d , cost of 1 BOT unit Rs . 2 )

Two electric lamps of power 30 W and 60 W have the same voltage rating . Find the ratio of their resistances .