Answer Posted / munish

if changes CT polarity than current flow in reverse
direction & it trip the circuit without any fault.

What is mason's gain formula?

1283

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Whether the vacuum contactor requires Short circuit protection?If No,why?

2022

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i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

1759

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in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformer 

1786

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I am having dual speed motor of cromton greaves make of 3.7 KW -1400 rpm and 5 KW - 900 rpm. Please let me know groups and winding connction for rewinding purpose.

1908

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what will be project cost for 100 kv transformer connection under oyt scheme.

2910

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Explain the advantages and disadvantages of hydropower plant?

1109

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During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative

2112

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Which material is used for the core of a transformer and why?

1086

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why should small green grass ans small plant should not be there inside the transformer Yard in the factories

1728

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what is load vs Torque curve & why it is used?

2054

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why industry prefer ht motor instead of lt motor.

2099

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how to introduce yourself

2016

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how we can calcultae the short circuit level for bus bar

2220

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A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram

2800

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