Which of the following devices is a least expensive power protection device for filtering the electrical
stream to control power surges, noise, power sags, and power spikes?

A.
Line Conditioner

B.
Surge Suppressor

C.
Uninterrupted Power Supply (UPS)

D.
Expansion Bus

Explanation:
A UPS is typically used to protect computers, data centers, telecommunication
equipment or other electrical equipment where an unexpected
power disruption could cause injuries, fatalities, serious business disruption and/or data loss. UPS
units range in size from units designed to
protect a single computer without a video monitor to large units powering entire data centers,
buildings, or even cities. The following services
are provided by a UPS:
1.Power Source: A UPS is placed for those devices that must be protected from blackout, brownout,
or other power line events.
2.Line conditioning: A UPS is a least expensive device for filtering the electrical stream to control
surges, noise, and spikes.
3.Surge Suppression: It provides protection from power surges and power spikes.
4.Brownout: It prevents from the demand of the electrical power that exceeds the capability of the
electrical power supply system and
reduces the voltage for everyone.
5.Power Sag: It prevents from a temporary dip in the voltage on the supply line that usually lasts
only a fraction of a second.
6.Backup power: It is the primary purpose of a UPS to provide backup electricity to the devices
plugged into it for a certain amount of
time.
Answer option A is incorrect. A line conditioner is a power protection device intended to improve
the quality of the power that is delivered to
electrical load equipment . It is also known as a power conditioner or power line conditioner. It is
used to filter out the electrical stream to
control surges and spikes to eliminate any line electrical noise on the line. It is very expensive as
compare to surge suppressor or UPS. It is a
device that acts in one or more ways to deliver a voltage of the proper level and characteristics to
enable load equipment to function properly.
Answer option B is incorrect. A surge suppressor is a power protection device, which is designed to
protect electrical devices from voltage
spikes. A surge processor attempts to regulate the voltage supplied to an electric device by either
blocking or by shorting to ground voltages
above a safe threshold. It uses a component named metal-oxide varistor (MOV) to suppress power
surges on the line. A surge suppressor is
rated by the amount of energy it absorbs, which is stated in joules. The 200 joules is minimum
protection, 400 joules average protection, and
600 or more is excellent suppressor.

Answer option D is incorrect. An expansion bus is made up of electronic pathways, which move
information between the code of a computer
system, including the CPU and RAM, and peripheral devices. It is a collection of wires and protocols
that allows for the expansion of a
computer. It has the capability of controlling its own transfer of data to another device, allowing the
computer to focus on other tasks. In
essence, this device freed ups the computer, allowing for more efficiency.