Answer / mamun

bcoz the single phase IM can not start by self i.e no starting
torque. if use capacitor with starting winding that make
higher angle between the starting winding current and
main/running winding current, so the 1-phase IM can be start
with the help of capacitor.

1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

0 Answers  

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what will happen if we double the input frequency of a transformer keeping the voltage constant?

6 Answers  

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why the voltage and current in a long transmission line are called travelling wave?

0 Answers   UIU,

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who to select a swicth fuse unit......?

2 Answers  

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When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV side and LV side. then we are applying grounding on both side. My question is that we required to isolate the VT which is still connected from secondary side.?

1 Answers  

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explain Density

0 Answers   TCS,

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IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

2 Answers  

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Hi,iam a diploma in electrical engineering.rtd from indian air force in apr 2007.prsently working in reliance next link as a network maintenance engineer since 2007,can i get a job in motherson sumi.

0 Answers   Motherson, Motherson Molds and Diecasting Ltd.,

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what is the difference b/w earthing and grounding??

2 Answers   Dodsal,

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Why we use series reactor in power system?

9 Answers   Cadbury, HEG, Uttam,

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I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for that?

5 Answers  

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Why is the uniform distribution of the capacitor discs in a suspension type insulators essential , what can u do to improve the string efficiency ?

1 Answers  

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