Question

Електродвигун при напрузі 220В споживає струм силою 20А. Опір його обмоток 0,75 Ом. Яка утворюється механічна потужність при роботі електродвигуна?

Answer 1

Дано:                         Розв"язання
U=220В                      N мех = I*(U-I*R)
І=20А                         N мех = 20 A*( 220 B - 20 A * 0.75Oм)=
R=0.75 Ом                 =4100 Вт

N мех -?

Answer 2

Calculation of Mechanical Power

To calculate the mechanical power generated by an electric motor, we can use the formula:

Mechanical Power (P) = Voltage (V) x Current (I)

Given the following values: - Voltage (V) = 220 V - Current (I) = 20 A

We can substitute these values into the formula to find the mechanical power:

P = 220 V x 20 A

Calculating this expression gives us:

P = 4400 Watts

Therefore, the mechanical power generated by the electric motor is 4400 Watts.

Please note that this calculation assumes an ideal scenario and does not take into account any losses or inefficiencies in the motor.