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H12-411 Dumps PDF - H12-411 Real Exam Questions Answers
NEW QUESTION 62
The end of lead-acid battery discharge, the vottage drop, positive and negative active materials transform into ().
- A. PbO
- B. H2S04
- C. Pb
- D. PbS04
Answer: D
NEW QUESTION 63
In air conditioning systems, the role of the oil separator is to separate the lubricant from the compressor discharge and return the separated lubricant to the compressor.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 64
Huawei NetEco monitoring system must not support the monitoring of third-party devices.
- A. False
- B. True
Answer: A
NEW QUESTION 65
Which of the following is the correct indication of a fixed valve-regulated lead-acid batteries with 2V single cell, rated capacity of 800Ah?
- A. 1-GFM-800
- B. 800-GMF-1
- C. 800-GFM-1
- D. GFM-800
Answer: D
NEW QUESTION 66
Which is the unit of UPS rated capacity?
- A. AH
- B. Kw
- C. KVA
- D. Var
Answer: C
NEW QUESTION 67
Which of the following options do not qualify as direct expansion air-cooled air conditioners?
- A. can not be installed over long distances, or large loss of refrigeration
- B. Refrigeration energy efficiency is relatively low
- C. Simple structure, easy installation, low cost
- D. Installation distance is unlimited
Answer: D
NEW QUESTION 68
At present, batteries are installed in data centers mainly in rack-mounted and tank-mounted installations.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 69
Which of the following communication interface transfer rate is the fastest?
- A. FE
- B. RS422
- C. RS485
- D. RS232
Answer: A
NEW QUESTION 70
Which of the following belongs to the indirect-contact heat and humidity treatment equipment? (Multiple Choice)
- A. Coil air heater
- B. Cooling coil
- C. Evaporator
- D. Electrode humidifier
Answer: A,B,C
NEW QUESTION 71
UPS can clean electricity input, output stable exchange, to protect the load
- A. False
- B. True
Answer: B
NEW QUESTION 72
According to different categories by electrolyte! the batteries can be divided into () and (). (Multiple Choice)
- A. lead acid batteries
- B. alkaline batteries
- C. flooded battery
- D. lean liquid battery
Answer: A,B
NEW QUESTION 73
During the construction process, what should the nitrogen bottle operation be equipped with specially?
(Multiple choice)
- A. Nitrogen valve
- B. Goggles
- C. Check valve
- D. Antifreeze gloves
Answer: A,B,D
NEW QUESTION 74
Battery slot of lead-acid battery is used to hold the electrolyte; plates, partitions, and so on.
- A. False
- B. True
Answer: B
NEW QUESTION 75
When AC power equipment are introduced in by using three-phase four-wire system, in addition to the zero line on the near side of the power transformer grounding, electrical equipment and the engine room should be near the ground repeatedly.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 76
The closer the PUE value is to (), indicates that the better the data center energy efficiency status is.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 77
The following () circuit breakers are typically low voltage circuit breakers for IT loads.
- A. RCB
- B. ACB
- C. MCCB
- D. MCB
Answer: D
NEW QUESTION 78
Under what circumstances UPS will work in static bypass mode?
- A. Mains voltage fluctuations too much
- B. Inverter fault
- C. The battery is damaged
- D. No electricity input
Answer: B
NEW QUESTION 79
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