Which two characteristics do all static UPS topologies share? (Choose two.)
A. A battery
B. An inverter
C. A transfer switch
D. A single-phase input
How long is the transfer to battery time for a double conversion online UPS?
A. 0 ms (0 cycles)
B. 8 ms (0.5 cycles)
C. 16 ms (1 cycle)
D. 500 ms (30 cycles)
Which component of a line interactive UPS increases its battery life?
A. Dual mains input
B. Voltage regulating transformer
C. Low impedance DC disconnect
D. High impedance battery charge circuit
What is the main function of a UPS?
A. To provide battery back-up power to IT equipment
B. To regulate the voltage of power going to the racks
C. To distribute power from the transformer to the racks
D. To supply diesel-generated power when the utility is out
What is a function of a transformer in a line interactive UPS?
A. To increase the power factor as the load increases
B. To increase harmonics by stepping down the output
C. To regulate output voltage as the input voltage varies
D. To provide low impedance for switched mode power supplies
Which UPS topology is most commonly used to protect small business and departmental servers where voltage regulation is required?
A. Standby
B. Line interactive
C. High-speed relay
D. Delta conversion online
What is the primary purpose of a UPS?
A. To remove transients from the power path
B. To detect and report power factor problems
C. To provide battery backup power should the utility fail
D. To convert from three-phase power to Single-phase power
Which UPS topology uses a transfer switch between the primary power source and the inverter?
A. Standby
B. High speed relay
C. Delta conversion online
D. Double conversion online
Which two UPS topologies are used for UPS systems that supply at least 50 kW? (Choose two.)
A. Standby
B. Standby - ferro
C. Delta conversion online
D. Double conversion online
What are two advantages of the line interactive UPS? (Choose two.)
A. High reliability
B. High efficiency
C. High frequency control
D. Optimized for 10 kW and above
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