The cost at 5 paise/KWH of operating an electric motor for 8 hours which takes 15 amp at `110V` is

The cost of 2Rs/kWh of operating an electric motor for 10hours takes 10amp at 110V is:

Find the cost of electricity for running an electric motor of 1 hp the 5 hrs a day at the rate of Rs 1.50 per unit of electricity for the month of November

Find the cost of electricity for running an electric motor of 1H.P. for 5hrs day at the rate of Rs. 1.50 per unit of electricity in the month of November.

The power rating of an electric motor that draws a current of 3.75 A , when operated at 200 V , is nearly

A 660-W electric lheater is hdesigned to operate from 129V lines. What is the resistance? What current does it draw? What is the rate of production of heat in calories per second? If the line voltage drops to 110V. What is power does the heater takes in waits? (J=4.2 joules per calorie).

How much electrical energy in kilowatt hour is connected to operating ten 5 watt bulbs for 10 hour per day in a mouth (30 days)

A house is fitted with 20 length of 60 watt each 10 fans consuming 0.5 ampere each an electric kettle of resistance 110 Omega . If the energy is supplied at 120 V and costs 150 paise kWh , calculate monthly bill for running these appliances for 6 hours a day (1 length = 30 days).

The efficiency of a motor is defined as the ratio of mechanical power output to that with input electric power. The motor is designed to operate at 100 V and it draws a current of 15 A . If output mechanical power of motor is 800 W, then calculate the efficiency of motor .

The rating of an electric lamp is 110V. To use it one 220V, one will have to use which one of the following?