Answer Posted / ramesh p n

Voltage is the potential difference between two Conductors,
for Single Phase and the fro three phase system it is the
potential Difference between three phases and the neutral
for Example in india WE have 240 Volts A C Voltage for
single phase and 415 V for 3 Phase,

Forula to determine Power, Voltage and Currents

1 Phase : P = V X I = { Power(in watts)= Voltage X Current}


3 Phase P = rootof3 X V X I cos Phi,


Power = 1.732 X Voltage X current X Power Fator

what is the pre charge circuit,what will be work which function it will be use plz tell me

1864

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draw 3 phase rectifier diagram

2129

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I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

1836

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is there any device that works properly accept relay, it may be fuse but if i want fuse of 33kv 300 amp it is avaliable, pls give me details

1932

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In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)

1719

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wht is embedded systems? what is new inthis field?

1944

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What is dc current source?

1215

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How to measure current and voltage in an ELV circuit

4085

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What is an iron loss or core loss pi?

1047

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Explain M Var? Which types of problem occurs when reactive power increase at the time of full load of plant and at the time of synchronize of plant?

1724

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define displacement & magnitude ?

1778

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i ha done my 10th with 71% ,ITI with 81% 11th with 75% 12th 43% apprentiship with 71% in SAT i secure 1390 ,TOEFL 27 i was refused four times and in all me interview visa officar told that i am not Qualify for study in USA but i completed my 12th yes i got low persentage in my 12th but i seen to much student they already got visa with them 3 or 4 backlocs so why they are refused me ?

3388

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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

2074

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hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.

2681

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in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?

2101

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