Answer Posted / vinod g

Lead ACID battery: three consecutive hourly reading of
specific gravity (1.21)and voltage (2.14)will be same
during charging or with specific gravity and voltage.

NiCd: with charging current on rated voltage

Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both

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What is the power factor of a transformer at no load?

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If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

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How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

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if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

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In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

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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?

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bsnl tta exam question

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Are Refrigerators & Deep Freezers the Inductive load ? How to calculate the Power Factor & hence the Output Power for them ?

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Which test will be more severe for VCB?

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we use capister for power factor. when we use capaciter in dg circuit  than defect dg. can we use capaciter bank for dg circuit

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How can I calculate the Mega watts required to run a plant having many electric motors and other electrical components.

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Whether power factor should be high or low? Why?

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What safety precaution are to be taken for avoiding electric hazards ?

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Explain Energy and Power signals?

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