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Electrical Theory 5th 1st Final Exam Questions With Solved Solutions.
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Which ITE tier site(s) is/are fault tolerant? - Answer Tier 4 When utility power is lost or a sever disturbance occurs, the UPS ___________ will shut down. - Answer Input section In the ________ UPS the inverter is always on and connected to the output of the UPS. - Answer Line inter...

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  • October 17, 2024
  • 5
  • 2024/2025
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  • Questions & answers

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Electrical Theory 5th 1st Final Exam
Questions With Solved Solutions.
Which ITE tier site(s) is/are fault tolerant? - Answer Tier 4



When utility power is lost or a sever disturbance occurs, the UPS ___________ will shut down. - Answer
Input section



In the ________ UPS the inverter is always on and connected to the output of the UPS. - Answer Line
interactive



The easiest battery type to service is __________. - Answer Battery cartridge with internal lead acid
batteries



A _________ is an element of the electrical distribution system that at some point will cause downtime if
a means to by- pass it is not developed in the system. - Answer SPOF



Ground path continuity should be tested for _________ and any ground path utilizing a conduit raceway
as the conducting path must have all bolted or screwed connections checked and tested. - Answer Low
impedance



Large flooded cell battery installation will usually require extensive __________ and may require cell
changes which are a specialized function requiring training and certification. - Answer Preventative
maintenance



All isolation transformers have an inherent phase shift from primary to secondary of __________ which
when used in by-pass configuration would create a potentially disruptive phase conflict when the UPS
went to static by-pass. - Answer 30 degrees



PEM is a type of fuel cell. PEM stands for _________. - Answer Proton exchange membrane

, The byproduct(s) of fuel cells is/are __________. - Answer Water, heat and electricity



What are the two classifications for fuel cells that provide AC power as an output? - Answer Interactive
fuel cell system



What was the first type of automated control system used to control the indoor environment in a
commercial building? - Answer Pneumatic control system



_________ accepts a control signal and causes a mechanical motion. - Answer An actuator



A hydroelectric-generating plant uses __________ to generate electricity. - Answer Water flow



An overcurrent protective device prevents _________ from reaching excessively high temperatures, due
to high currents, by opening the circuit. - Answer Conductors or devices



__________ are caused by loads near the beginning of a power distribution system, incorrectly wired
transformer taps, and large loads being turned off. - Answer Voltage swells



What type of UPS system has high efficiency, small size, and is lower in cost than other types of UPS
systems - Answer Stand-by



________ is the intentional reduction of electrical power to a lamp in order to reduce its light output. -
Answer Dimming



Ballasts that are based on inductors are often called __________ ballasts because an inductor is a coil of
wire that creates a magnetic field, which resists changes in the current flow through the coil

. - Answer Magnetic



A(n) ____________ is an electric lamp that produces light by striking an electrical arc across tungsten
electrodes housed inside an arc tube. - Answer High intensity discharge lamp



_________ are the most common form of automatic lighting control used in buildings

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