Free Huawei H20-681-ENU Exam Dumps Questions & Answers

The incoming and outgoing line mode of Huawei's intelligent sub-array controller SmartACU2000B adopts up-out and down-in.

• A.  False
• B.  True

The principle of maximum power point tracking using Boost circuit is to adjust the switching tube duty cycle so that the impedance fed back to the input side of the load is equal to the maximum power point impedance of the solar cell, also called the impedance matching principle of the maximum power output. .

• A.  False
• B.  True

The following documents belonging to the output document in the project supervision process are (). (Multiple Choice)

• A.  Technical Service Inspection Application
• B.  Inverter Construction Technical Disclosure Record
• C.  Inverter Installation Checklist
• D.  Inverter Customer Training Record Form

In the case of fiber-optic networking, the fiber head can be washed directly with water when it is dirty.

• A.  False
• B.  True

The Huawei PID module is only used in the isolated grid-connected system, and there is no electrical connection between the AC side and the DC side of the inverter.

• A.  False
• B.  True