what is UPS ?
Last Answer : UPS is Uninterrupted Power Source
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132 views
1 answer
asked
Aug 18, 2017
by
anonymous

Write short note on UPS and its usage in railway system.
Last Answer : Ans. Ideally, the voltage supply by the utility system should be perfect sine wave without any harmonics, at its nominal frequency of 50 Hz and at its nominal magnitude. In practice however voltage can ... load from one source to the other results in the least amount of disturbance seen by the load.
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8 views
1 answer

When UPS or Fedex updates each step in tracking, are they scanning each individual package, or are they scanning the cargo container (only)?
Last Answer : I wonder the same. I am waiting with you for an answer.
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1 view
1 answer
asked
Mar 2
by
anonymous
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Why does the UPS tracking number need 30 digits?
Last Answer : here
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1 answer
asked
Mar 1
by
anonymous
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UPS and Fedex appear to have been totally overwhelmed with this year's deliveries. Who will benefit from their screwups?
Last Answer : Do you have a link regarding fedex and UPS not delivering as promised?
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1 answer
asked
Feb 28
by
anonymous

Does UPS drug test?
Last Answer : I’m pretty sure they do.
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1 view
1 answer
asked
Feb 28
by
anonymous

What is a good reliable brand of UPS?
Last Answer : In one place you say UPSes…then, USP. What exactly are you looking for?
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2 views
1 answer
asked
Feb 27
by
anonymous

How do UPS trucks nagivate?
Last Answer : I can’t answer your specific question. but here in the Los Angeles, UPS drivers have established routes.
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1 view
1 answer
asked
Feb 26
by
anonymous
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UPS- How to give Connection?
Last Answer : Ans. Means Uninterrupted power supply. To give UPS connection, first normal supply is kept off. Then, loads of essential and non essential are to be segregated. Essential loads are to be brought under single point of control. Then, UPS can be connected.
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1 answer

What is UPS how it works?
Last Answer : UPS stands for Uninterrupted Power Supply. This system can be of two major types and work to ensure uninterruptible power within a specified period before backup comes in. There is a static ... type has the advantage of less maintenance when compared with the mechanical type with rotating parts.
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11 views
2 answers

Ham Roll Ups
Last Answer : Ham Roll Ups - serves 10 3 (8 ounce) packages cream cheese, softened 3 tbsp horseradish 2 tbsp finely chopped onion 1 (8 ounce) container sour cream 2 pounds cooked ham, thinly sliced ... and sour cream. Spread the mixture onto the ham slices. Tightly roll the slices and secure with toothpicks.
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8 views
1 answer
asked
Apr 26, 2021
by
anonymous

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)
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95 views
1 answer
asked
May 21, 2020
by
anonymous
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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.
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80 views
1 answer
asked
Oct 13, 2019
by
anonymous

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.
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3.3k views
1 answer
asked
Jul 25, 2019
by
anonymous
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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.
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69 views
1 answer
asked
Jul 25, 2019
by
anonymous

Can I get some opinions? (Details inside)
Last Answer : answer:Let UPS accuse your neighbor, just give the police the facts as best you know them. Don't say anything that is speculative on your part. If UPS or the Police have some way of determining ... power to them. But since you don't have proof, just speculation, stay out of inflaming the situation.
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0 views
1 answer
asked
Feb 28
by
anonymous

What do I do if I haven't received my order from Ebay?
Last Answer : answer:Contact the seller and your local UPS. Let both know the tracking is showing the package was delivered but that you have not rec'd the package. If this were me, I'd also open a case on ebay ... feedback click on More Actions , then Resolve a problem ...Then I didn't receive my item .
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1 view
1 answer
asked
Feb 27
by
anonymous

Can I revive these APC batteries?
Last Answer : answer:What is wrong with them? The best thing to do once a UPS battery quickly depletes, slow or no charge is replace them. Why risk it.
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1 view
1 answer
asked
Feb 27
by
anonymous

What is the use of power factor correction?
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91 views
0 answers
asked
Mar 10, 2018
by
anonymous
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Can you have a power factor greater than 1?
Last Answer : We cannot have power factor greater than 1. As it is a measure of cosine of angle between voltage and current.
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132 views
1 answer
asked
Mar 10, 2018
by
anonymous

What is the best power factor?
Last Answer : It is unity power factor but difficult to achieve in dynamic loads
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89 views
1 answer
asked
Mar 10, 2018
by
anonymous

What is power factor angle?
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67 views
0 answers
asked
Mar 10, 2018
by
anonymous

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.
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161 views
1 answer
asked
Mar 10, 2018
by
anonymous
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How much is 1 unit of electricity?
Last Answer : 1 unit of electricity is equal to 1 kWh.
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87 views
1 answer
asked
Mar 10, 2018
by
anonymous

What is a digital power meter?
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53 views
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asked
Mar 10, 2018
by
anonymous

What is an RF Power Meter?
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53 views
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asked
Mar 10, 2018
by
anonymous

What causes random power outages?
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52 views
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asked
Mar 10, 2018
by
anonymous

What is mitigation of harmonics?
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56 views
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asked
Mar 10, 2018
by
anonymous

What is the difference between linear and nonlinear electrical loads?
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1.1k views
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Mar 10, 2018
by
anonymous

What is current harmonics?
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55 views
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Mar 10, 2018
by
anonymous

What is a non linear load?
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60 views
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asked
Mar 10, 2018
by
anonymous
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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
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104 views
2 answers
asked
Mar 10, 2018
by
anonymous

Why do we need to correct power factor?
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62 views
0 answers
asked
Mar 10, 2018
by
anonymous

What is meant by KVA?
Last Answer : KVA - kilo volt ampere Used to specify the transformer details
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156 views
2 answers
asked
Mar 10, 2018
by
anonymous

How do you read a KWH Meter?
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78 views
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asked
Mar 10, 2018
by
anonymous

What is the cause of voltage fluctuation?
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61 views
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Mar 10, 2018
by
anonymous

What are even and odd harmonics?
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61 views
0 answers
asked
Mar 10, 2018
by
anonymous

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
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178 views
1 answer
asked
Mar 10, 2018
by
anonymous

Why do non linear loads cause harmonics?
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94 views
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asked
Mar 10, 2018
by
anonymous

Why harmonics are generated in electrical system?
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65 views
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asked
Mar 10, 2018
by
anonymous

What is power logger?
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175 views
0 answers
asked
Mar 10, 2018
by
anonymous
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How do you measure power factor?
Last Answer : P= 1.83*V*I*COS@ where P is power V is voltage I is current COS @ is P.F COS@= P/(1.83*V*I) in other way cos @ = true power/apparent power
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97 views
1 answer
asked
Mar 10, 2018
by
anonymous
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What does an electric meter measure?
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71 views
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asked
Mar 10, 2018
by
anonymous

What are the power quality disturbance?
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81 views
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asked
Mar 10, 2018
by
anonymous
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What is harmonic in power quality?
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59 views
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asked
Mar 10, 2018
by
anonymous

What is a power quality analyzer?
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446 views
0 answers
asked
Mar 10, 2018
by
anonymous

What is power quality meter?
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60 views
0 answers
asked
Mar 10, 2018
by
anonymous

What are the different power quality issues?
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69 views
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asked
Mar 10, 2018
by
anonymous

What is good power quality?
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68 views
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asked
Mar 10, 2018
by
anonymous
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What is power quality monitoring?
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71 views
0 answers
asked
Mar 10, 2018
by
anonymous
