The rated voltage of a motor is 220 V, the rated power is 1.1 kW, and the coil resistance is 5 How much a is the normal operation of the motor at 10:6? How much electric heat does it produce when it is electrified for 1min? (2) What is the reason that the motor is easy to burn out when it is fabricated
I=P/U=1100W/220V=5A
Q=I^2Rt=(5A)^2*5*60s=7500J
When the motor just works, the current is very large, I = u / r = 220 V / 5 = 44 a
A lot of heat makes it burn easily
If you don't understand, ask me again
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