Answer Posted / selvin

the protection devices and loads are operating level based
design purpose

wat is the first thing dat is needed, 2 lay a cable in some area??

1859

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why do we have spikes enough to burn electronic boards, when generators are not grounded

1807

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How many points does a Circuit can have?

1965

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how many electricity poles are there and what are the names and their sizes.

1915

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what is arc flash and what are the hazards involved

2155

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Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

1962

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What is the difference between in Fourier series and Fourier Transform. and please tell me the difference between both of them and the why we use them in communication system?

2020

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why the field winding in dc motor is not short circuited eventhough dc supply is applied across the winding

1841

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Ratings of power transformer,Distribution transformer.

1610

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We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.

1657

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

2029

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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?

2070

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What is the transfer function?

1080

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why we can use 1 to 5V dc

1960

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How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?

2690

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