A motor, rated voltage is 220 V, rated power is 4 kW, ask: (1) 1 kW. H of electric energy for the normal operation of the motor how long?

A motor, rated voltage is 220 V, rated power is 4 kW, ask: (1) 1 kW. H of electric energy for the normal operation of the motor how long?

Rated power P = 4kw
W=1KW*h
Power supply time t = w / P = 1 / 4H = 15min
Therefore, 1kW. H electric energy can be used for normal operation of this motor for 15min
Is there a second question?