Answer / Arun Kaurav

A Proportional Controller (P-controller) adjusts the output of a control system in proportion to the error between the desired and actual system performance. It has a gain parameter that determines the speed of response.

dear all, How do i increase UPS (1000VA)backup time ? i have connected 2 12v wold you please 120 aH battery externally. ups charge the lead acid battery only 12.7 volt. backup time only 10.00 minuts and gose off. can any one of you help me?

1 Answers   Technomax, ups,

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Parts of machine and their discription in details with suitable photo

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where is used dc volage transformer,and what is highest capacity of transformer

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3phase motor 400v (induction) A.C 4kw company design 1400rpm but our requirement 2000rpm possible? attached any instrument. reply fast! contact 03343262442

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hello! can anyone explain to me how a 3 speeds table fan work? what are the factors that are controlling the speed of a normal table fan? Is it by varying the voltage or changing the magnetic field? would appreciate your reply :) thx in advance.

2 Answers  

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374kvar capacitor bank connected across 600kw,6.6kv motor.what will happen if motor run at 50% , whether full kvar applied or half?

1 Answers   NTPC,

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What is PIR (pre inserting resistance) in 400kv EHV SF6 BREAKER? Why it use?

1 Answers   Adani,

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What is Diff btw MCP & MCB????

10 Answers   Athena, Emerson, Suzlon,

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what is per unit calculation?looking for simple and strong explanation thk u

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1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

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why did lightening arrester rod probe sharp?

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what is p.s impedance measurement test in earthing transformer?

1 Answers   Greenko,

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