Answer / amal kumar

Y-d or D-y is the most commonly used transformers.
Y-d provide a stable neutral system.

In power plants the reading changes abruptly to give value (MW -25) (MVAR -15) What are the reasons for this? What is the solution?

2 Answers   GE,

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What is the formula to calculate the rating of power cable for three phase current.

0 Answers  

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I AM INTERESTED TO WIND A 3 PHASE MOTOR HOW I CALCULATE TURNS, PITCH,AND WIRE SIZE FROM STATOR DIMENTIONS

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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MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III

1 Answers  

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what about GD square and its important for motor design?

0 Answers   Innovis, MNC,

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advantage,disadvantage,aplication of sensorless direct torque control of induction motor

0 Answers  

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it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high

2 Answers   DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,

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Why the transformers are rating in KVA.?

5 Answers   ISMT,

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If R and Y terminals are short circuited,then power will cut. we all know that power cannot be stored.what will happen to already generated power at power station?

3 Answers  

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what is the d/f b/w dol & star delta starter.

2 Answers  

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In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans

0 Answers  

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