Answer / rahul kumar patel

PIU means power interface unit

Why is the frequency not changed during transformation of electrical energy in a transformer?

0 Answers  

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when a airgap of the induction motor gets larger does it draw more current ??? does it power factor gets lower?

3 Answers  

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Why short ckt does not happen when solenoid coil connected to supply. as its a wire only.

1 Answers   Siemens,

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If the rotor pf of a 3 phase induction motor is .866, then what is the phase displacement between stator and rotor magnetic field 1)30,2)120,3)150,4)90 please justify....

2 Answers   GATE,

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Explain The Application Of Storage Batteries?

0 Answers   ABB,

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WHEN THESE TRANSFORMERS WINDINS CONFIGURATION ARE USED? SPECIALLY EXPLAIN REGARDING STEP UP AND STEP DOWN KEEPING IN MIND.AND REGARDING LOAD ALSO. a.star to delta b.delta to star c.delta to delta d.star to star ALSO EXPLAIN WHY V USE 415/415 TRANSFORMERS IN TUBEWELLS?

1 Answers   ABB,

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we all know that in capacitor there will be no ay physical connection between the two electrodes of the capacitor ,and the charge is stored between these electrodes during charging , so with out any physical connection how these charge is transferred from one plate to the another plate during the discharge?????

1 Answers  

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why we are not giving the zone 1 trip command to the master trip relay

0 Answers  

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what do you mean by PF correction. A motor is rated at 15 kw,415 volts, 0.7 pf and eff of 0.92. The powerfactor is improved to 0.98 by adding capacitors at the bus. calculate the current drawn by motor under full load condition before and after pf correction

5 Answers  

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WHY CAN WE NOT CHAGE SPEED OF SYNCHRONOUS MOTOR...............................JUSTIFY

2 Answers   ISMT,

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What is VCB'S @ ACB'S.Plz explain Briefly

2 Answers  

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If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance and battery of accumulator of open circuit emf 110V and 0.5 Ohm resistance are in parallel what is common terminal potential difference?

0 Answers  

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