Free APC DU0-001 Exam Questions (page: 13)

What are two key characteristics of a UPS? (Choose two.)

  1. It tests voltages on IT equipment.
  2. It safeguards data in the event of a power loss.
  3. It measures energy consumption of IT equipment.
  4. It transfers IT equipment from utility to battery power.

Answer(s): B,D



Which two characteristics do all static UPS topologies share? (Choose two.)

  1. A battery
  2. An inverter
  3. A transfer switch
  4. A single-phase input

Answer(s): A,B



What is the primary difference between double conversion and delta conversion UPS systems?

  1. Double conversion UPSs require a 1.3X generator oversizing. Delta conversion UPSs require a 3X generator oversizing.
  2. Double conversion UPSs are practical in size ranges from 0 - 20 kW.
    Delta conversion UPSs are practical in size ranges of 20 kW to 1 MW.
  3. In a double conversion UPS, 100% of the power is converted from AC to DC and then again from DC to A In a delta conversion UPS, only the difference between input and output power is converted.
  4. In a double conversion UPS, the transformer has a special ferro-resonant capability, which provides limited voltage regulation and output waveform shaping. In a delta conversion UPS, a standard transformer is used.
    ,

Answer(s): C



Which are three examples of "what you know" access control? (Choose three.)

  1. Password
  2. Coded lock
  3. Iris detection sensor
  4. Speaking into a voice recognition sensor
  5. Use of keyboard commands to log in to a computer system

Answer(s): A,B,E



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