Answer / k.prakashchandra

Whenever there is a fault in the system there will be a
momentary dip in voltage as breaker takes some time to clear
the fault.The momentary rise is due to sudden reduction of
load or lightning stroke

Answer / n k singh

It is due to variation in loads. It also occurs due to fault in the network.

Answer / jamsheer

Actually voltage dip is the sudden decrease of rms voltage of transmission line.And voltage swell is the temporary increase in RMS value of AC voltage with the magnitude of the retained voltage between 110% and 180% of the rated voltage.These are mainly due to the fault occurring on any of the power system components.

what is safety of ups

1 Answers   JLL,

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Magnetizing current for induction motor compared to transformer is= A equal B more C less D depends on load

1 Answers  

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explain me how a power factor is improved by adding a capacitor?what capacitor do to improve it?in simple words and in detail?thx

7 Answers  

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What's the differs between voltage & current & emf.

1 Answers   CTS, NTPC, TCS,

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Is it possible to interlock between ACB & MCCB?

2 Answers   Areva,

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what is charger supervision and control supervision?

0 Answers  

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what is the difference SCR & TRIAC?

13 Answers   TCS,

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What is static Device & Mechanical device? Is transformer a static device?

5 Answers   ABB, Emco,

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why grid frequency varry time to time?

2 Answers  

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block diagram of 2 ups system connected in parallel mode?

0 Answers  

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why choke is provided in the centre of the tube light?

3 Answers  

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we have a 2.5hp Starite electric motor water pump,the elec motor burned out,we need to replace starting capacitor(old capacitor specs erased),what microfarad rating capacitor do we need? 110-125V

0 Answers  

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