what is UPS ?
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Answer :

UPS is Uninterrupted Power Source
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Description : what is UPS and what are its uses?

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

Description : What is UPS how it works?

Answer : Ans. An UPS is a device which supply un interrupted power supply. This works on the principle of charging the batteries when normal power is available and take power during power is failed.

Description : What is the need of UPS?

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.

Description : Write short note on UPS and its usage in railway system.

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.

Description : UPS- How to give Connection?

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.