Answer Posted / ravendran

the relay used to protect the closing coil.that means
breaker closing condition again to give close command it is
used to bypass the command and save the closing coil.

What is the application of Dyn1 and Dyn11 vector group of transformer?

2859

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We have a couple of oil tanks at our plant. One of them does not have a lightning arrester installed. My question is it necessary to install an arrestor on every tank or will this particular one be covered by the arrestor installed on the ajdacent tank, Since all the tanks are close to each other. Basically, I want to know that if these arrestors or protection works in a parituclar area of effect or influence. Thanks

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I need HT sphere gap calibration table. Can any body help me.

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In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?

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What is turn ratio of a transformer?

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2210

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When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?

2060

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2157

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Tell me about ur past electrical maintanence job

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In synchronous motor, how the field current is related to armature current..i know its inversely proportional..but concept wise...i was nt clear....pls help me...

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