Answer / tanvir

3 ph 3 wire system is using for motive power or balance
load and 3ph 4 wire system is using for lighting load and
unbalance load

Answer / vaijanath nirgude

3ph 34wire

Answer / dileep

3ph 4 wire is best suitable for un balaced loads & wher we can have single phase loads also.but it will require more volume of conductor than compared to 3 ph 3 w..

presently I am working in private sector.In powergrid interview recruiter asked me why you join this organization.

0 Answers   Power Grid,

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The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason

0 Answers  

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define ac reactor? thier application;

1 Answers  

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what & how to check the lightning arrester

0 Answers   ABC Telecom,

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how to select earthing wire? procedures and parameters?

2 Answers  

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Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

0 Answers   Power Plant,

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write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

0 Answers  

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In a 11KV 3phase system do you need to earth both sides of the cable?

2 Answers  

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what is a relay?

31 Answers  

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whether choke act as a voltage regulator in tubelight or not?

1 Answers   Bhel,

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WHATS THE DIFFERENCE IN USING THE 125% AND THE 250% FACTOR OF SAFETY IN CALCULATING CIRCUIT BREAKERS CAPACITY IN MOTOR APPLICATION??

0 Answers  

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For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

0 Answers   Ecil,

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