Answer / den

WE CAN'T CALCULATE THE POWER LOSE BECAUSE THE CKT. IS OPEN
AND THERE IS NO FLOW OF CURRENT.**** thanks

Answer / den jagus

we can't Calculated the power lose of an open ckt. Because
there is flow current.**** THANKS

Answer / nur.asidik

we can calculate no load loss of TR, but you need to know impedance of TR

Answer / k.prakashchandra

Short the LV side ,increase voltage on HV ,till you get the rared current. The percentage of this voltage against rated voltage is % impedance . if you connect a watt meter you get copper losses . With open circuit apply rated voltage ,to measure the iron losses with a watt meter .

what is the formulae for selcting capacitor bank to increas pf

3 Answers  

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What is the differentional relay...what is the work of this in power Tx. how it is works..

0 Answers   ABB,

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Is it possible that Generator trip but Turbine not trip.Give explanation.

1 Answers   Essar,

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An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%

0 Answers  

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is there or does RCCB work for single phase connection?

2 Answers  

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what are different types of excitation in synchronous generator,what is the difference between them

3 Answers  

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how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

0 Answers   Sandhar,

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generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

0 Answers  

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difference between dol and rdol startors?

2 Answers   Vijai Electricals,

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why voltage rating not mention at HPSV or HPMV lamps?

2 Answers   OPS,

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What is rotor angle stability?

2 Answers  

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What happen if 1200KW/1500KVA alternator runs at no load and high R.P.M.for one minute?

6 Answers  

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