H12-411_V2.0 Certification – Valid Exam Dumps Questions Study Guide! (Updated 203 Questions)
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NEW QUESTION 52
The following four major components that are not air conditioners are ____________ .
Answer:
Explanation:
fans
NEW QUESTION 53
In the main inverter mode, when the mains input voltage and frequency exceed ups When the allowable range isups Will be inverted from the main circuit. The mode shifts to static bypass mode.
- A. False
- B. True
Answer: A
NEW QUESTION 54
Dynamic ring monitoring system can be applied to ____________ .
Answer:
Explanation:
data center computer room, unattended substation, wireless base station, transmission node computer room
NEW QUESTION 55
STS The static transfer switch can switch between different input power sources and provide dual power supply for single power loads.
- A. True
- B. False
Answer: A
NEW QUESTION 56
MCB Circuit breakers can be divided into different tripping characteristics B, C, D, Z, K Level, for IT For load, you should use ____________ class Tripping characteristics.
Answer:
Explanation:
C
NEW QUESTION 57
UPS The inverter component can realize the conversion from AC to DC.
- A. False
- B. True
Answer: A
NEW QUESTION 58
In the data center power supply and distribution system, the low-voltage circuit breaker with three-stage protection feature is used for.
- A. Prevent the main circuit from being overloaded due to the short circuit of the branch circuit
- B. Prevent the main circuit from breaking due to branch circuit breaking
- C. Prevent branch circuit short circuit caused by branch circuit overload
- D. Prevent the main circuit from breaking due to a short circuit in the branch circuit
Answer: A,D
NEW QUESTION 59
The following ____________ is not the basic function of low-voltage circuit breakers.
Answer:
Explanation:
dual power supply switching
NEW QUESTION 60
Use POE When interface, it has two functions of communication and power supply.
- A. True
- B. False
Answer: A
NEW QUESTION 61
The leakage protector is mainly divided into electronic type and electromagnetic type according to the action mode.
- A. True
- B. False
Answer: A
NEW QUESTION 62
The abbreviation for valve-regulated lead-acid battery is VRLA.
- A. True
- B. False
Answer: A
NEW QUESTION 63
R410A The moment the refrigerant is sprayed to the outside, it can freeze human skin and deep muscles in a very short time, and cause skin necrosis at the frostbite site.
- A. True
- B. False
Answer: A
NEW QUESTION 64
UPS systematic N+X System ratio 2N The power supply guarantee level of the system is higher.
- A. False
- B. True
Answer: A
NEW QUESTION 65
The function of Huawei's chilled water air conditioner plug-in frame power supply is to provide a stable power supply for the fans.
- A. True
- B. False
Answer: A
NEW QUESTION 66
At the end of the discharge of lead-acid batteries, the voltage drops, and the positive and negative active materials are converted into ____________ .
Answer:
Explanation:
PbSO4
NEW QUESTION 67
In the main inverter mode,ups When overloaded, it will switch from the main circuit inverter to the battery inverter mode.
- A. False
- B. True
Answer: A
NEW QUESTION 68
____________ Support creating report tasks according to report templates.
Answer:
Explanation:
Report management
NEW QUESTION 69
The following is for high frequency ups The correct description of the rectifier components is.
- A. Complete DC to AC conversion
- B. Realize power factor correction and boost function
- C. Complete AC to DC conversion
- D. Realize power factor correction and pressure reduction function
Answer: B,C
NEW QUESTION 70
____________ The main function is electric energy distribution, which distributes the front-end electric energy to various types of electrical equipment according to requirements, standards and specifications, such as ups, Air conditioning, lighting system, etc.
Answer:
Explanation:
Low-voltage power distribution system
NEW QUESTION 71
Water cooling/The refrigerant of ethylene glycol air conditioner has been flushed before leaving the factory, so it is convenient and quick to install on site.
- A. True
- B. False
Answer: A
NEW QUESTION 72
If ups The capacity is 20KVA, Then in normal work,ups The front-end input capacity may be ____________ .
Answer:
Explanation:
25KVA
NEW QUESTION 73
The main fire extinguishing agent used in the data center fire protection system is ____________ .
Answer:
Explanation:
heptafluoropropane
NEW QUESTION 74
The data center computer room monitoring system mainly monitors power systems, environmental systems, and fire fighting systems.
- A. True
- B. False
Answer: A
NEW QUESTION 75
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