Free Sales Ending Soon - Use Real H12-421 PDF Questions [Mar 27, 2022]
Updated Mar-2022 Exam H12-421 Dumps - Pass Your Certification Exam
NEW QUESTION 27
When installing the power line on the UPS5000-E, if there are different sources on the main side, you need to remove the copper bars connected to the bypass and the main circuit, and then connect the main circuit and the bypass input respectively.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 28
When the UPS5000 series multi-rack networking is parallel, the host should be set to ().
- A. No need to set
- B. Many to one
- C. One to many
- D. One to one
Answer: C
NEW QUESTION 29
In the Huawei NetCol5000-A line-class precision air conditioner, the () parts are optional.
- A. Fan
- B. Electric heating
- C. Evaporator
- D. Compressor
Answer: B
NEW QUESTION 30
Which of the following factors affect battery life? (Multiple Choice)
- A. Depth of discharge
- B. Temperature
- C. Rated capacity
- D. Number of cycles
Answer: A,B,D
NEW QUESTION 31
What can convert a PoE signal into a WiFi signal?
- A. Skylight actuator
- B. WFi converter
- C. AC actuator
- D. VCN
Answer: B
NEW QUESTION 32
When the Huawei air-cooled air-conditioning compressor is turned on for the first time, the crankcase heating belt needs to be warmed up for more than ( ) hours.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 33
The NetCol5000-C air conditioner does not support the power module plug and play maintenance.
- A. False
- B. True
Answer: A
NEW QUESTION 34
The function of the ATS input unit / MCCB input unit of the integrated UPS is ().
- A. Provide branch output for direct supply from the mains
- B. Provide branch output of UPS direct supply
- C. Provide dual or single input to the cabinet
- D. Monitor the running status
Answer: C
NEW QUESTION 35
The report functions of NetEco has a variety of presentation forms, including visualization of bar charts, pie charts, graphs, etc.
- A. True
- B. False
Answer: A
NEW QUESTION 36
The UPS5000-E can press the battery cold start button on the bypass module without the main bypass input to start the inverter, and the system will automatically enter the battery inverter mode.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 37
During the use of the battery pack, the appearance is normal, but there is no current during charging, and the voltage drop is zero at the moment of discharge, and it cannot be discharged. What could be happened in the following?
- A. backward battery
- B. Breaking the battery pack
- C. Battery leakage
- D. Sulfation
Answer: B
NEW QUESTION 38
In the air conditioning system, the pipe can maintain a positive pressure and the pipe can maintain a negative pressure.
- A. False
- B. True
Answer: A
NEW QUESTION 39
When the internal short circuit of the battery occurs, the faulty battery charging voltage (), the open circuit voltage is low (generally less than 1V/cell).
- A. No change
- B. High
- C. Low
- D. all possible
Answer: C
NEW QUESTION 40
() can realize the signal processing and centralized control of UPS5000-E.
- A. Energy Control Module ECM
- B. Maintenance bypass module
- C. Power module
- D. Bypass module
Answer: A
NEW QUESTION 41
When the single machine is working, after the function of power-off of the ups2000-g machine is prohibited, the PL port has no output when overload or battery power is low.
- A. False
- B. True
Answer: A
NEW QUESTION 42
NeCol5000-C nitrogen filling pressure value is (); holding time is ().
- A. 1.0MPa; 12h
- B. 1.0MPa; 24h
- C. 0.8MPa; 24h
- D. 0.8MPa; 12h
Answer: C
NEW QUESTION 43
When the ECC800 detects that the connection signal to the device is interrupted, a communication interruption alarm is generated. What are the possible reasons? (Multiple choice)
- A. Equipment failure
- B. Cable connection is loose
- C. Poor cable contact
- D. Power supply is not normal
Answer: A,B,C,D
NEW QUESTION 44
The operation noise of the NetCol5000-A air conditioning unit is abnormal. It should be checked whether the compressor, fan, pipeline, etc. are fixed normally and there is looseness.
- A. True
- B. False
Answer: A
NEW QUESTION 45
The wheel patrol function is enabled to interchange the running machine and the standby machine, thereby increasing the average life.
- A. True
- B. False
Answer: A
NEW QUESTION 46
In the process of using the battery, in order to reduce the deterioration of the voltage imbalance between the batteries, it is necessary to increase the charging voltage of the battery pack, and to activate and charge the battery to extend the battery life, which is called ().
- A. Charging test
- B. Balanced charging
- C. Self-discharge
- D. Floating charge
Answer: B
NEW QUESTION 47
The data center energy efficiency PUE is as small as possible, and the minimum can be close to zero.
- A. False
- B. True
Answer: A
NEW QUESTION 48
What does the gas fire extinguishing system startup principle include? (Multiple choice)
- A. Automatic start
- B. Safe start
- C. Emergency start
- D. Manual start
Answer: A,C,D
NEW QUESTION 49
DOD (depth of discharge) indicates the percentage of battery discharge and battery rated capacity.
- A. True
- B. False
Answer: A
NEW QUESTION 50
To balance the capacity loss caused by the self-discharge of the battery during the use of the battery, it is necessary to charge the battery continuously and for a long time at constant voltage, which is called ().
- A. charging
- B. self-discharge
- C. charging test
- D. balanced charging
Answer: A
NEW QUESTION 51
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