Question 1

Which of the following statements regarding energy-saving strategies is correct?

Options :

A : Using only direct natural cooling is insufficient to meet Tier III standards

B :

Mechanical cooling combined with direct and mixed cooling, along with high building height and outdoor air quality requirements, is essential.

C : Natural water cooling has high water source requirements but poses no environmental risks.

D :

Utilizing an indirect evaporative cooling system can effectively lower indoor temperatures using low outdoor temperatures and extend the operational time of natural cooling.

Answer: A,B,D

Question 2

Adjusting the high air temperature at the end of the cooling system can effectively reduce the energy consumption of the cooling system and lower the PUE (Power Usage Effectiveness) value.

Options :

A : True

B : False

Answer: A

Question 3

When calculating the power demand of a UPS (Uninterruptible Power Supply) system, only the backend capacity needs to be considered, and redundancy for the load does not need to be accounted for, while the capacity of the battery can be ignored.

Options :

A : True

B : False

Answer: B

Question 4

Regarding the use of circuit breakers, which of the following descriptions are correct?

Options :

A :

A frame circuit breaker can be used for low-voltage main distribution cabinets where the incoming current is very large

B :

A plastic shell circuit breaker should be used for a precision air conditioner with a cooling capacity of 42kW; a miniature circuit breaker cannot be used.

C :

A miniature circuit breaker can be used in precision distribution cabinets.

D :

A plastic shell circuit breaker can be used for a 200kVA UPS distribution cabinet.

Answer: A,C,D

Question 5

In the future, data centers may achieve unattended monitoring using new technologies, utilizing AI for sound, image, and odor signal collection and analysis, thereby reducing the need for human observation.

Options :

A : True

B : False

Answer: A

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