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what is UPS ?
asked
Aug 18, 2017
by
anonymous
what is UPS ?
ups
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Answer
answered
Aug 19, 2017
by
anonymous
UPS is Uninterrupted Power Source
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Related questions
asked
Aug 8, 2017
by
anonymous
what is UPS and what are its uses?
what is UPS and what are its uses?
Last answer:
Ups means uninterrupted power supply It supplies power when there is power supply outage. This is done by storing power in battery banks while power is on and then during power outage the DC in battery is converted to a.c by inverters
ups
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1
answer
asked
Oct 13, 2019
by
anonymous
What is the need of UPS?
What is the need of UPS?
Last answer:
1) An Uninterruptible Power Supply (UPS) is used to protect critical loads from mains supply problems including spikes, voltage dips, fluctuations and complete power failures using a dedicated battery. 2)A UPS system can also be used as standby system when AC mains is failed.
ups
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1
answer
asked
May 21, 2020
by
anonymous
Describe working of online UPS. List any two applications of UPS.
Describe working of online UPS. List any two applications of UPS.
Last answer:
Online UPS: The block diagram of the on line UPS systems is as shown, where the load is connected to the invertor through the UPS static switch. The UPS static switch is ... 4) Healthcare: hospitals, clinics and retirement homes 5) Telecommunications 6) Special projects (events)
working
online
ups
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1
answer
asked
Jul 25, 2019
by
anonymous
Explain the operation of UPS with a neat block diagram.
Explain the operation of UPS with a neat block diagram.
Last answer:
Uninterruptible-Power-Supplies (UPS): A block diagram of UPS system is shown in figure. It essentially consists of four major components: i)Rectifier (or battery charger) ii) ... . Due to fast action requirement, transfer switch can be implemented by fast acting semiconductor devices.
operation
ups
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1
answer
asked
Jul 25, 2019
by
anonymous
Define transfer time and back up time of UPS.
Define transfer time and back up time of UPS.
Last answer:
Transfer time of UPS: The transfer time, sometimes also called switchover time, is the amount of time the UPS will take to switch from utility to battery supply during a mains failure, or from battery to ... is the amount of time for which the UPS will supply the power to load during mains failure.
ups
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1
answer
asked
Mar 10, 2018
by
anonymous
What is the use of power factor correction?
What is the use of power factor correction?
use
power
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correction
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70
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0
answers
asked
Mar 10, 2018
by
anonymous
What is the best power factor?
What is the best power factor?
Last answer:
It is unity power factor but difficult to achieve in dynamic loads
best
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factor
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75
views
1
answer
asked
Mar 10, 2018
by
anonymous
What is power factor angle?
What is power factor angle?
power
factor
angle
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59
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0
answers
asked
Mar 10, 2018
by
anonymous
What is difference between KW and KVA?
What is difference between KW and KVA?
Last answer:
kW is kilowatt and kVA is kilovolt ampere. kW is unit of real power and kVA is unit of Apparent power.
difference
between
kw
kva
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134
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1
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asked
Mar 10, 2018
by
anonymous
What is a digital power meter?
What is a digital power meter?
digital
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Mar 10, 2018
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anonymous
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Mar 10, 2018
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What is mitigation of harmonics?
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43
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answers
asked
Mar 10, 2018
by
anonymous
What is the difference between linear and nonlinear electrical loads?
What is the difference between linear and nonlinear electrical loads?
difference
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linear
nonlinear
electrical
loads
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answers
asked
Mar 10, 2018
by
anonymous
What is current harmonics?
What is current harmonics?
current
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43
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0
answers
asked
Mar 10, 2018
by
anonymous
What is a non linear load?
What is a non linear load?
non
linear
load
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47
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answers
asked
Mar 10, 2018
by
anonymous
What is the advantage of high power factor?
What is the advantage of high power factor?
Last answer:
Reduced copper losses Smaller conductor size Improve voltage regulation Increase system capability Less energy bill
advantage
high
power
factor
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75
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2
answers
asked
Mar 10, 2018
by
anonymous
What is meant by KVA?
What is meant by KVA?
Last answer:
KVA - kilo volt ampere Used to specify the transformer details
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137
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2
answers
asked
Mar 10, 2018
by
anonymous
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What is the cause of voltage fluctuation?
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answers
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Mar 10, 2018
by
anonymous
What is power logger?
What is power logger?
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165
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answers
asked
Mar 10, 2018
by
anonymous
What is harmonic in power quality?
What is harmonic in power quality?
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47
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0
answers
asked
Mar 10, 2018
by
anonymous
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434
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0
answers
asked
Mar 10, 2018
by
anonymous
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What is power quality meter?
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meter
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45
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answers
asked
Mar 10, 2018
by
anonymous
What is good power quality?
What is good power quality?
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quality
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0
answers
asked
Mar 10, 2018
by
anonymous
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What is power quality monitoring?
power
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0
answers
asked
Mar 10, 2018
by
anonymous
What is the difference between a blackout and brownout?
What is the difference between a blackout and brownout?
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between
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brownout
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54
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0
answers
asked
Mar 10, 2018
by
anonymous
What is the cause of a brownout?
What is the cause of a brownout?
cause
brownout
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42
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0
answers
asked
Mar 10, 2018
by
anonymous
What is the definition of brownout?
What is the definition of brownout?
definition
brownout
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46
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0
answers
asked
Mar 10, 2018
by
anonymous
What is meant by power dip?
What is meant by power dip?
power
dip
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54
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0
answers
asked
Mar 10, 2018
by
anonymous
What is voltage interruption?
What is voltage interruption?
voltage
interruption
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39
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is meant by a voltage surge?
What is meant by a voltage surge?
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50
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is voltage sags and swells?
What is voltage sags and swells?
voltage
sags
swells
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59
views
0
answers
asked
Aug 18, 2017
by
anonymous
what is trickle charging ?
what is trickle charging ?
Last answer:
It is the process of charging a fully charged battery at the rate equal to its own discharge rate. This process ensures that the battery remains fully charged. It is carried out only when the battery is not connected to the load.
trickle
charging
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51
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1
answer
asked
7 hours
ago
by
anonymous
The economist who believed that unemployment is impossible and that market mechanism has a built in regulatory system to meet any ups and downs (1) J.M.Keynes (2) Ohlin (3) J.B.Say (4) Galbraith
The economist who believed that unemployment is impossible and that market mechanism has a built in regulatory system to meet any ups and downs (1) J.M.Keynes (2) Ohlin (3) J.B.Say (4) Galbraith
Last answer:
J.B.Say
economics
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1
answer
asked
Apr 10, 2018
by
anonymous
A UPS commonly has following parts : (i) rectifier (ii) inverter (iii) static switch Which of the following is true ?
A UPS commonly has following parts : (i) rectifier (ii) inverter (iii) static switch Which of the following is true ? (a) only (i) (b) only (i) and (ii) (c) (i), (ii) and (iii) (d) only (ii) and (iii)
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79
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0
answers
asked
Mar 10, 2018
by
anonymous
What causes random power outages?
What causes random power outages?
causes
random
power
outages
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45
views
0
answers
asked
Mar 10, 2018
by
anonymous
What are even and odd harmonics?
What are even and odd harmonics?
even
odd
harmonics
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1
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52
views
0
answers
asked
Mar 10, 2018
by
anonymous
What are the main causes of harmonics?
What are the main causes of harmonics?
Last answer:
Harmonic is a non linear load because linear load voltage deviated due to connection of some electrinie device such as converter,inverter
main
causes
harmonics
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151
views
1
answer
asked
Mar 10, 2018
by
anonymous
What does an electric meter measure?
What does an electric meter measure?
electric
meter
measure
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50
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0
answers
asked
Mar 10, 2018
by
anonymous
What are the power quality disturbance?
What are the power quality disturbance?
power
quality
disturbance
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72
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0
answers
asked
Mar 10, 2018
by
anonymous
What are the different power quality issues?
What are the different power quality issues?
different
power
quality
issues
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50
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0
answers
asked
Mar 10, 2018
by
anonymous
What can you do to prevent a power surge?
What can you do to prevent a power surge?
prevent
power
surge
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51
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0
answers
asked
Mar 10, 2018
by
anonymous
What can cause a short circuit?
What can cause a short circuit?
cause
short
circuit
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53
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0
answers
asked
Mar 10, 2018
by
anonymous
What causes transients?
What causes transients?
Last answer:
Transient is a peak voltage take small period. It will occur due to lightning
causes
transients
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113
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1
answer
asked
Mar 10, 2018
by
anonymous
What causes lights to dim in house?
What causes lights to dim in house?
Last answer:
While taking a more load from other Equipment
causes
lights
dim
house
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185
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1
answer
asked
Mar 10, 2018
by
anonymous
What can cause a voltage spike?
What can cause a voltage spike?
cause
voltage
spike
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50
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0
answers
asked
Mar 10, 2018
by
anonymous
What would cause a power surge in a house?
What would cause a power surge in a house?
Last answer:
If your neibour / other flat owners / your maintainer staff switch on any type of inductive load that can cause power surge / dip
cause
power
surge
house
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70
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1
answer
asked
Jun 29, 2020
by
anonymous
State any three points of difference between online UPS and off-line UPS.
State any three points of difference between online UPS and off-line UPS.
Last answer:
On-line UPS Off-line UPS An on-line UPS continuously powers the protected load from its reserves (usually lead-acid batteries or stored kinetic energy), while simultaneously replenishing the ... the mains power. In this type of UPS frequency stability is always available.
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9
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1
answer
asked
Jun 28, 2020
by
anonymous
With the help of diagram explain working of UPS
With the help of diagram explain working of UPS
Last answer:
The UPS delivers uninterrupted power to the ac load. It consists of the following functional blocks: AC mains section contains filter, transformer and rectifierIt receives ac supply, ... has synchronization circuits for smooth change-over from mains to inverter ac avoid waveform distortion.
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23
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1
answer
asked
Apr 12, 2018
by
anonymous
A UPS : .......................
A UPS : A) increases the storage capacity of a computer system B) increases the process speed C) provides backup power in the event of a power cut D) increases I/O speed
Last answer:
A UPS : provides backup power in the event of a power cut
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37
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1
answer
asked
Mar 10, 2018
by
anonymous
How much is 1 unit of electricity?
How much is 1 unit of electricity?
Last answer:
1 unit of electricity is equal to 1 kWh.
unit
electricity
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