APC APC Certifications DU0-001 Questions & Answers

• Question 261:

  Which three fuels are used to power a generator? (Choose three.)

  A. Glycol

  B. Diesel

  C. Gasoline

  D. Methanol

  E. Natural gas

  Correct Answer: BCE

• Question 262:

  Which statement illustrates a characteristic of nominal voltage?

  A. Nominal voltage is the voltage reference published by the power company.

  B. In most geographies, nominal voltage is fixed at either 380 V or 460 V.

  C. Nominal voltage is calculated based upon the load characteristics of the end user.

  D. Nominal voltage is the voltage that is supplied to the building and factors in power distribution losses.

  Correct Answer: A

• Question 263:

  What are three components of power distribution? (Choose three.)

  A. Flexible conduit

  B. Circuit / branch circuit

  C. Automatic Transfer Switch (ATS)

  D. Uninterruptible Power Supply (UPS)

  E. Ground Loop

  Correct Answer: BCD

• Question 264:

  Which statement is a recognized characteristic of single-phase power?

  A. Single-phase power excludes the use of three-phase power in the data center.

  B. Single-phase power provides an effective means for delivering DC power to the data center.

  C. Single-phase power is an effective choice of power supply when data center users require large volumes of power.

  D. Single-phase power implies that power comes into the data center with one "hot" wire, along with accompanying neutral and ground.

  Correct Answer: D

• Question 265:

  What are two circuit breaker types found in a building or data center? (Choose two.)

  A. Thermal

  B. Magnetic

  C. Fast-acting

  D. Photovoltaic

  Correct Answer: AB

• Question 266:

  What defines a sub-panel?

  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

  Correct Answer: B

• Question 267:

  Which two factors contribute to the amount of noise an electrical circuit contains within a building infrastructure? (Choose two.)

  A. The temperature ranges within the data center

  B. The integrity of the grounding system throughout the building

  C. The voltage type available to the building at the service entrance

  D. The degree to which electrical loads are balanced throughout the building

  Correct Answer: BD

• Question 268:

  What defines a delta to wye transformer?

  A. Takes in three-phases and ground; outputs three-phases and ground

  B. Takes in three-phases, neutral, and ground; outputs three-phases and ground

  C. Takes in three-phases and ground; outputs three-phases, neutral, and ground

  D. Takes in three-phases, neutral, and ground; outputs three-phases, neutral, and ground

  Correct Answer: C

• Question 269:

  What are three transformer types? (Choose three.)

  A. Step-up transformer

  B. Isolation transformer

  C. Step-down transformer

  D. Delayed input transformer

  E. Limited induction transformer

  Correct Answer: ABC

• Question 270:

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

  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.

  Correct Answer: C