Recent content by rg1

Someone gave me this advise. I found useful. However I did all chapters and all chapter end questions. It was helpful. Chapter 1---show you how to use the per unitChapter 2 ---If you don't remember the basics of KVL, KCL etc.Chapter 3, 4, 5....i barely touch it....is DC generators and...

I think, Hand written in pencil are not allowed anywhere, because that will be understood as if you have done it in the exam, which is prohibited. Hand written in pencil and then Xeroxed should not be an issue.

Perfect! There can be 4 combinations. The boundary limits are, do not exceed the rated current of the coils, rated voltage of the coil, see for addition or subtraction (dot convention) of voltage depending on buck/boost. The transformation ratios of currents and voltages (make sure directions...

It is my pleasure. If any one is having any doubt or if you are not getting some question, you can PM me, Whenever I visit the forum, I will try to answer your queries. 

The dot notation for transformer is- If in one dot the current goes in the coil, in the other dot the current will come out of the coil. The voltage sign on dots will be same as positive. So in left coil, the current goes in and in the right coil current comes out. The left coil consumes power...

Please follow the steps (in circles) in the given diagram to reach the answer. Step 4 is interesting. I would like you guys understand the stuff. If you do not follow how I got a particular answer in a particular step, just let me know. I will explain that step. 

Hints 1. Total voltage across both paths is same. 2. Voltage across transformers comes from transformation ratio give.  3. Current in one path in given, the current in other path will be such that (1) above is satisfied.

The problem is a lagging load, but how does it matter here. You have been given a load and Voltage. Rest is maths.  Yes if the solution has taken Vbn with +120 degrees, it is wrong as per convention.  Conventionally phase sequence is ABC. May be because the question asks only magnitude part...

I have suggestion. Start with one beer, with increment of one, each passing day. The anxiety will increase each passing day and so will the dose. I managed it in a different way. I went to attend an Indian marriage, the party goes on for more than a week ......... Party till you get the...

Till you give up it is not a failure, it is only work in process and I have yet to see someone who did not give up and failed. I am sure you must be feeling yourself better prepared and doing better every time than what you did last time. Now when you extrapolate the graph there is point of time...

please share the question

One question which comes to my mind is what is the protection angle of shield wire. perhaps it is 30 degrees. Please verify data before use.

Generally synchronous motors are the loads which feed the fault. This is because they have energy of their inertia of rotation. This energy is dissipated as electrical energy into the fault, as the motor starts working as generator  once the terminal voltage of motor reduces due to fault. If you...

The question 21 is wrong. You simply transform the current across transformers to get Generator current. There is no role of base voltage and base power there. Rather they could have specified actual Generator Voltage to ask for Generator current. You can  do it directly by Power formula Power=...

Brip please see my comments in red. I hope it will help you. If not, let me understand the specific latch in your understanding, I will try to help it out. The concept it easy, once you get it.  Thanks