One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 429
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Fill-in-the-blank: When starting a single-stage centrifugal pump, it is necessary to close ( ), and then start ( ) in order to prevent the ( ) from becoming too high and causing the motor to burn out. Answer: outlet valve, motor, motor starting power
Outlet valve, electric motor, motor starting power
When starting a single-stage centrifugal pump, the outlet valve should be closed first; the motor is then started in order to prevent the motor from being damaged due to excessive starting power.
Outlet valve, electric motor, motor starting power
When starting a single-stage centrifugal pump, the outlet valve should be closed first; then the motor is started in order to prevent the motor from being damaged due to excessive starting power.
Power supply Power supply Initial power
When starting a single-stage centrifugal pump, the (exit) should be closed first, and then the (motor) should be started, in order to prevent the motor from being damaged due to excessive (current).
Outlet valve, electric motor, motor starting power
When starting a single-stage centrifugal pump, the outlet valve should be closed first; then the pump is started in order to prevent the motor from being damaged due to excessive starting current
When starting a single-stage centrifugal pump, the outlet valve should be closed first; then it is started in order to prevent the motor from being damaged due to excessive starting current.