Question 1

What indicates the breaking capacity of a fuse or breaker?

Options :

A : Mechanical strength of the casing of a fuse or breaker.

B :

The maximum voltage, in case of an electrical surge, that the fuse or breaker can handle without being destroyed or causing an electric damaging arc.

C : The current at which the device will trip.

D :

The current that a fuse or breaker is able to interrupt without being destroyed or causing an electric damaging arc.

Answer: D

Question 2

Which one of the following is an advantage of using Natural Gas?

Options :

A : Minimum carbon build up

B : Maximum carbon build up

C : Tends to cost more

D : More exhaust able

Answer: A

Question 3

Do you need to consider bullet (ballistics) protection when designing a data center?

Options :

A : Bullet (ballistics) protection is required by ANSI/TIA-942 for all data centers.

B :

Bullet (ballistics) protection is only required when the data center is located in an area with a high crime rate.

C : Bullet (ballistics) protection is required by ANSI/TIA-942 for data centers Rated 3

D :

Bullet (ballistics) protection is only required if the facility is a potential target or the building is in the vicinity of a potential target.

Answer: D

Question 4

The pipes of a VESDA smoke detection system are installed at the air intake of the air conditioner inside the computer room. Is this a good practice from an early smoke detection point of view?

Options :

A : It depends on the type of gas-based fire suppression which will be installed.

B : Yes, as this reduces the amount of piping to be installed in the data center, as all air will go through the air conditioner.

C : No, the piping should be installed at the air exhaust of the air conditioner, as there can also be a fire inside the air conditioner itself.

D : No, it will give a longer reaction time for the smoke detection system and there might also be bypass airflow.

Answer: D

Question 5

An air-conditioner unit needs to be selected. Two types are available: Unit-A has a Sensible Heat Ratio (SHR) of 0.7. Unit-B has a Sensible Heat Ratio (SHR) of 0.9. From an efficiency point of view, which one should be selected?

Options :

A : It does not matter, as the Sensible Heat Ratio has nothing to do with efficiency

B :

Not relevant, as Sensible Heat Ratio is only specified for air-conditioner equipment to indicate the ratio between intake temperature and exhaust temperature.

C : Unit A

D : Unit B

Answer: D