How many kilowatt hour power consumption of 220 V, 50 Hz and 20 W?

48 degrees, kW / h = one degree

How does the voltage of 220 V make the motor reverse?

Take the two heads of the main coil as A1A2, and the two heads of the secondary coil as b1b2; connect A1B1 with a power line; connect one head of the capacitor with B2, and connect the other head with A2 with another power line, which is positive transmission. When it is necessary to reverse, adjust B1 and B2 (or A1 and A2) to reverse

The resistance of a DC motor is 0.6 ohm. The voltage at both ends of the motor is 220 v. how much mechanical energy does the motor output through the current of 20 a
By the way, the electric energy consumed by the motor and the heat generated by the motor

Electric energy consumed by motor = voltage * current = 220 * 20 = 4400w
Heat generated by motor = current ^ 2 * internal resistance of motor = 20 * 20 * 0.6 = 240W
Mechanical energy output of motor = electric energy consumed by motor - heat generated by motor = 4400w-240w = 4160w

When the washing machine works for 0.5 hours, the current works 3600000 joules, and the washing machine consumes electric energy

This problem is not right. In this problem, the energy of work is the same thing. Since the work done by current is 360000j, the electric energy consumed by washing machine is 360000j. Since one degree of electricity (1kwh) equals 360000j, it can also be said that the electric energy consumed by washing machine is 0.1 degree

How many kilowatt hour power consumption of 220 V, 50 Hz and 20 W?