Answer Posted / reshi

The power transformation ratio in the transformer is
1:1.Only the voltage and currents are subjected to
change.Pri MVA=Secondary MVA. Except to compensate for some
losses.

Difference between Lugs and Thimbles

13767

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What are merits & De-merits of State-Space Method? What is series programming, parallel programming, general programming & direct programming ? And, difference between these programmings Techniques ?

1938

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Give some differences between open loop and closed loop?

635

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ht side line to earth voltage

1075

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How can find thermal state value in relay for calculate thermal overload.

1411

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What is the relationship between voltage,current & frequency?

1269

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whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

1044

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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

2380

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What is the function of interposing current transformer?

608

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how we calculate the short circuit capacity of the busbar in LV & HT?

645

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What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?

1625

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What is the difference between AC and DC injection methods for rotor earth fault protection

1686

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how to select electrical equipment such as fuse,dg,transformer,motor,msb,wire,cable as per the connecting load..please mention any books to design,take licence

2495

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what is zinc diffusion?

1545

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What the main causes of transient interruptions on Over-Head Distribution Lines?

1589

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