One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 472
Thread Content
Multiple-choice question: The main hazards caused by the direct starting of a three-phase asynchronous motor refer to ( ). A. The starting current is high, which can burn out the motor windings. B. During startup, it causes a large voltage drop in the circuit, preventing the loads connected to the same circuit from functioning properly. C. The power factor is low during startup, resulting in significant waste. D. The starting torque is low during startup, making it impossible to drive loads. Answer: B. During startup, it causes a large voltage drop in the circuit, preventing the loads connected to the same circuit from functioning properly
When B starts up, it causes a significant voltage drop on the circuit, preventing the loads connected to that same circuit from functioning properly
When B starts up, it causes a significant voltage drop on the circuit, preventing the loads connected to that same circuit from functioning properly
Well, the pump motors are all three-phase asynchronous motors, so the principle should be the same