Question

an electric motar take 5a from a 220 v line determine the power of a motar and the energy consumed in 2 h?
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Answer 1

Answer:

answer 1 .Given parameters

Voltage (V) = 220 V

Current (I) = 5 A

Time (t) = 2 h = 2 x 60 x 60 = 7200 s

Power (P) is given by the expression,

P = V × I

P= 220 x 5

P = 1100 W

Energy consumed by the motor = P x t

P = 1100 x 7200

P = 7.92 x 106 J

Therefore, power of the motor = 1100 W

Energy consumed by the motor = 7.92 x 106 J.

answer 2. The power of the motor and the energy consumed. Hence, the power of the motor is 1100 watt or 1.1 kW. Energy = 1.1 kWh × 2 h. Hence, the energy consumed in 2 hour is 2.2 kWh.