Get 2021 Updated Free Huawei H12-411 Exam Questions & Answer
H12-411 Dumps PDF and Test Engine Exam Questions
Huawei H12-411 Exam Syllabus Topics:
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NEW QUESTION 39
The STS Static Transfer Switch enables switching between different input power supply and provides dual power supply for single power load.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 40
Air conditioning has three major indicators; the three major indicators refer to (). (Multiple Choice)
- A. Temperature
- B. Humidity
- C. Cleanliness
- D. Dryness
Answer: A,B,C
NEW QUESTION 41
The role of the safety valve in the battery construction prevents excessive internal pressure and drains the excess ().
- A. Electrolyte
- B. Hydrogen H2
- C. Water vapor H20
- D. Oxygen 02
Answer: B
NEW QUESTION 42
At present, the communication methods used by the Dynamic environment monitoring system are (). (Multiple choice)
- A. DGT
- B. Modbus
- C. Dry Contact
- D. SNMP
Answer: A,B,C,D
NEW QUESTION 43
Fuses can protect the personal safety in case of the equipment earth leakage.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 44
There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. The second capital letter represents ().
- A. shows the relationship between neutral N and protective earth PE
- B. Indicates the relationship of the power system to the exposed conductive parts of the power receiving system
- C. Indicates the relationship of the power system on the ground
- D. Said the relationship between power receiving system exposed conductive parts and the ground
Answer: D
NEW QUESTION 45
Huawei dynamic environment monitoring system, which equipment at the data collection layer can pass the underlying components (UPS, precision air conditioning, etc.) information to the monitoring software?
- A. server
- B. camera
- C. ECC800
- D. entrance guard
Answer: C
NEW QUESTION 46
12V battery consists of 6 2V battery cells.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 47
The following () air supply methods are mainly applicable to the craft air conditioners in lower work area where there is a large amount of waste heat to be taken away.
- A. middle air-supply
- B. bottom supply and bottom return
- C. bottom supply and upper return
- D. upper supply and bottom return
Answer: C
NEW QUESTION 48
The condensed water of air conditioning is air after cooler cooling, formed by the condenser.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 49
Cryogenic components improve the continuous low pressure caused by low temperature start-up, thus allowing the air conditioner to start up normally.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 50
In air-conditioning systems, the role of () is to cool the high-temperature and high-pressure gas discharged from the compressor by using water-cooled or air-cooled to release heat to the outside world.
- A. Condenser
- B. compressor
- C. Expansion valve
- D. Evaporator
Answer: A
NEW QUESTION 51
For the same MCB circuit breaker, the rated ultimate short-circuit breaking capacity leu is generally less than the rated operating short-circuits breaking capacity Ics.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 52
The humidifier that Huawei row-level precision air conditioner uses is the infrared humidifier.
- A. False
- B. True
Answer: A
NEW QUESTION 53
Which of the following does not belong to the four major components of air conditioning?
- A. Fan
- B. Condenser
- C. Evaporator
- D. Compressor
Answer: A
NEW QUESTION 54
According to the concentration degree of equipment, air conditioning system can be divided into (). (Multiple choice)
- A. decentralized
- B. Semi-centralized
- C. Centralized
- D. Mixed
Answer: A,B,C
NEW QUESTION 55
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