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Question 1

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 2

What are the primary components of a data center's typical energy consumption?

Options :

A : IT equipment energy consumption

B : Power supply energy consumption

C : Cooling energy consumption

D : Solar energy supply

Answer: A,B,C

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

According to GB50174-2017, data centers using chilled water cooling systems should have thermal storage devices, with storage time meeting operational needs. Is this correct?

Options :

A : Yes

B : No

Answer: B

Question 5

In a data center with an IT load level of Grade B, it is not necessary to configure dual power paths.

Options :

A : Yes

B : No

Answer: B