Answer Posted / aayushi agarwal

1 phase motors are non self starting
so methods used for starting them are
resistance split
capacitance split a) capacitor start
b)capacitor start capacitor run

two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

1416

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Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?

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please tell me when we start motor without load in star or delta connection whose current above condition,pl write formula

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What is the difference between the relay and the circuit breaker?

1115

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what is the use of the puls transformer in UPS & how it works???????????

2213

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1)Explain why the cradle guard is used on railway crossing in overhead line construction?

5049

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What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

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We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.

1991

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what is basic difference betmeen normal & flame proof motor??

2019

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i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.

2080

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What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?

2045

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If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma

2100

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in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

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what is the purpose of using filters in a protective relaying scheme?

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reason of diode failure in alternator

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