Answer / ashish aka sam

pHASE IS THE VECTORIAL REPRESENTATION OF VOLTAGE WITH
RESPECT TO CURRENT.

Answer / mrityunjay pandey

phase in electrical engg means the angle which is made by one vector (say-current) with respect to a base vector (say-voltage)..as we know in inductor current lags voltage ,so we take voltage as reference and measure the angle made by current phasor,suppose we got 30 degree angle .then the power factor i.e. cos (PHI)=cos(30 degree)=0.866..similarly current leads voltage in capacitor..

Answer / rana

Phase is the term which define the position of a rotating vector on vertical axis at any instant.Normally it used to define the angular value of alternator generation like current and voltage at that instant.

Answer / sanjayjssate

Phase is vectorial representation of line voltage like
Vsin@

Answer / omprakash

It is not the proper and point to point answer

Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?

0 Answers  

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What is the formula to find out the kvar required to improve the powerfactor from .85 to .99 at 1500kw, 415v.

4 Answers   Trident,

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How to test Power Transfomer vector group?

1 Answers   Bhel,

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What will happen if the rotor of an induction motor is fed from a 3 phase supply and the stator short circuited ?

4 Answers  

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What is rated value? is it phase values or line values?

1 Answers  

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Can I do body earthing of machine by using Cable armour or I have to run another GI wire for body earthing and how many wires I need to run. Is there any rule for this. eartnig

3 Answers   HAL,

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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.

0 Answers   HAL,

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how to set the overload setting in the thermal overload relay?? is there any calculation in that??

3 Answers  

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if a motor has 1500rpm then what will its HP?

3 Answers   Willdale,

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I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 Answers  

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why put integration for capacitorand differation for inductance

1 Answers  

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Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

0 Answers   Piramal Healthcare,

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