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1. what is the power factor of a purely inductive load? 2. Which type of transformer connection is preferred in case of power supply transformers? 3. In power transformer usually which winding is closer to the core? 4. what will happen to the generated emf if the no. of poles of an alternator is increased?
5 62591. what is the power factor of a purely inductive load? (i) Zero (ii) Lagging (iii)Leading (iv) Unity 2. which type of transformer connection is preferred in case of power supply transformer? (i) Star/Star (ii) Delta/Delta (iii) Star/Delta (iv) Zig Zag/Star
2 5481what is the power factor of an inductive load ? (i) Zero (ii) Lagging (iii) Leading (iv) Unity
5 8729Can we parallel lise the secondary side of the two similiar transformers with same voltage ration, imp, but with different vector groups.. ( for ex. 11 KV / 6.6KV two trfs but different vector groups can we parallelise both of them ,, what happens if we parallelise them
1 3878what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?
2173if a damaged 500kva transformer with %impedance 2.6 is replaced by two transformers of 250Kva with different % impedance will they be able to catter the load. what will be the ratio of load on the two transformers if the % impedance is in the ratio 1:2
2 4732Post New Electrical Engineering Questions
What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?
On what cycle does thermal power plant operate?
how to choose cable size with respect to load? how to convert cable size in mm2 to sq.mm?
11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??
WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >
sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
What Is Connection APFC Panel In Compony.
Why Stabilising Resistor used in REF circuit ?
How to calculate the Efficiency of Chiller
I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?
What are the components of feedback control system?
Give some differences between open loop and closed loop?
Explain Creepage Distance of Insulator
A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.
