What is difference between YNyn0 and YNyn ??

2559

I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1871

what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..

2036

Pl. brief about break-down maintenance of machine tool.

1801

For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?

1827

what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

1616

What is the difference between Delta & Wye windings?

2096

how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)

1984

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

2301

Define peak time.

1145

how to check avr of dg set of 125kva

2599

what is the differance between HT motors And LT MOTORS.

1980

hr round

2139

pls tell me function of closing coil of A.C.B.

3382

What is the RMS and DFT principle of analogue maesurments. Which way they are advangages. where which princples give optimum results.

2678