Answer / jayakumar.k

NDR--Neutral Displacement Relay which is provided in HT
capacitor bank panels.

Answer / upendra sharma

Neutral displacement relays are used for capacitor banks,
theses realays protect system against imblancing of
capacitor bakns. Application of these relays are wye
connected ungrounded banks. relay detemines the gravity of
imbalance and isolate the bank in case of faulty capacitor
of any phase.

i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

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the 230 value of voltage which is use in our home . is that value is rms, aerage or peack value of voltage?

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How multimeter shows phase to phase voltage 440V & phase to neutral 220V.

2 Answers  

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Hai, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to yuva_polisetti@yahoo.co.in

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What is meant by celling voltage & current in excitor ?

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WHAT IS MEANING OF Gg & Gg IN hrc FUSE

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WHY WE DO NOT TAKE THE POWER FACTOR MORE NEARER TO UNITY IN AC GENERATOR?

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what is the actual difference betwen constructional details and constructional features?

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what is the effect if we add capacitor on DG supply, it has any loss or benefit.

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What is the lockout relay

0 Answers  

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