Answer / venkata ramana

Three phase supply produce rotating magnetic field so three
motors are self starting so not required capacitors in three
phase motors.

why only exciting current is shown not primary current in transformer???

0 Answers  

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My meter ratio is -/5 and ct ratio is 100/5 now what will be the multiplying factor and how ?

1 Answers  

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What do you mean by cold shinkable cable joint.How it is done.

0 Answers  

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why motor starting current is High ?

11 Answers   Bhel, Jindal,

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How to take Vector group test of Transformer?

16 Answers   Sunflag Steel, Zuari Cements,

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When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

6 Answers   APNPDCL,

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why two point starter,three point starter, four point starter cannot be used for A.C machines?

2 Answers  

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the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?

2 Answers  

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AVR

2 Answers  

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1.generator rated as 1000 mva,11kv .8 pf what will 0.8 pf will indicate? 1.max pf it can supply 2.min pf it can supply like this 4 options there what is answer.explain

5 Answers   Power Grid,

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Equal resistance of 100ohm each are connected to the arms of whestons bridge, which is supplied by 2v battery. The galvanometer can sense a current low as 1microAmp. What is the smallest resistance that can be measered.

1 Answers   GATE,

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how we have to calculate the short circuit current for 33/11kv 2mva, 7.5% Z, Transformer primary side breaker and secondary side breaker short circuit current for both sides?.

5 Answers  

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