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Viewing questions 11-20 out of questions
Questions # 11:

What are the three basic physical security categories that describe technologies for personnel identification? (Choose three.)

Options:
A.

Who you are

B.

Where you are

C.

What you have

D.

Who you know

E.

What you know

Questions # 12:

What defines a sub-panel?

Options:
A.

An enclosure consisting of buss-bars and circuit breakers located at the service entrance to a building B. An enclosure consisting of buss-bars and circuit breakers with the fundamental purpose of distributing power to receptacles and the load

B.

An enclosure consisting of buss-bars and circuit breakers designed to accept two sources of power and operate as a best source selector

C.

An enclosure consisting of buss-bars and draw-out circuit breakers with the fundamental purpose of distributing power to branch distribution panels

Questions # 13:

What is the definition of reliability?

Options:
A.

The fraction of time a system is unable to perform its intended function.

B.

The likelihood that a system failure will occur for a specified time range.

C.

The ability of a system to perform its required functions for a specified period of time.

D.

The degree to which a system is accessible when required for use at an instant in time.

Questions # 14:

What is the function of a circuit breaker?

Options:
A.

To distribute power from the UPS to critical loads

B.

To filter harmonics caused by non-power factor corrected computer loads

C.

To protect electrical equipment from damage caused by overload or short circuit

D.

To balance the loads in the data center to prevent stray currents on the ground wire

Questions # 15:

Click the Exhibit button.

Question # 15

This picture illustrates which type of cooling architecture?

Options:
A.

Rack

B.

Row

C.

Room

D.

Building

Questions # 16:

What is the purpose of the voltage regulator as a component of a standby generator?

Options:
A.

To control voltage produced at the output of the prime mover

B.

To control the voltage produced at the output of the alternator

C.

To control current flow produced at the output of the alternator

D.

To control voltage produced by the starter to start the prime mover

Questions # 17:

A UPS system consists of three modules in a parallel redundant configuration. Each module is rated to provide 200 kW of power. If the electrical load grows from 350 kW to 420 kW, what will happen?

Options:
A.

The UPS system will not provide any additional power beyond 400 kW.

B.

The UPS system will reach an overload state and switch to its static bypass.

C.

The UPS system's response will vary depending on the rate of electrical load growth.

D.

The UPS system will continue to support the load and become a capacity configuration.

Questions # 18:

Which NCPI component protects the data center during long duration outages (several hours to days)?

Options:
A.

Generator

B.

Static UPS

C.

Flywheel UPS

D.

Automatic transfer switch

Questions # 19:

What is a fundamental purpose of a step-up or step-down transformer?

Options:
A.

Supply a neutral reference on the secondary side that is different than what is supplied on the primary side.

B.

Supply a ground reference on the secondary side that is different than what is supplied to the primary side.

C.

Deliver a voltage reference on the secondary side of the transformer different than what is supplied to the primary side.

D.

Deliver the same voltage reference on the secondary side of the transformer equal to that supplied on the primary side.

Questions # 20:

Which can cause a swell or surge to occur in the data center's electrical system?

Options:
A.

UPS failure

B.

CRAC unit startup

C.

Transformer failure

D.

Sudden load reduction

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