Question

A motor takes an input of 25 kW from a 250 V supply. Find the current flowing through the motor. If the motor is in operation for one hour each day on an average, what is the energy consumed in kWh in one month. If electrical energy costs at Rs 1 per kWh, what is the monthly bill?


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Answer 1

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Answer 2

Explanation:

Given A motor takes an input of 25 kW from a 250 V supply. Find the current flowing through the motor. If the motor is in operation for one hour each day on an average, what is the energy consumed in kWh in one month. If electrical energy costs at Rs 1 per kWh, what is the monthly bill?

• So power input P = 25 kW = 25,000 W
• Voltage supply V = 250 V
• Time t = 1 hour
• cost of energy = Re 1 per kWh
• Now we have
• Power P = VI
•         25,000 = 250 x I
•         I = 25,000 / 250
•         I = 100 A
• So consumption of energy per day = P x T
•                                            = 25 kW x 1 hr
•                                            = 25 kWhr
• Therefore consumption of energy in 1 month (30 days) will be  
•                                                           = 30 x 25 kWhr
•                                                             = 750 kWh
• Therefore the monthly bill will be  
•                                                  = 1 / kWh x 750kWh
•                                                  = Rs 750

Reference link will be

https://brainly.in/question/34198028