Goverment Exam Papers

In India, All those who complete there Education has an wish to get into a Govt. Job. But, when thinking about that the confusion that arise in our minds are

"how the paper will be?",

"how the technical questions will be?"

and many others..

For those who have confusion and trouble with govt. exams this blog will help them to clear there confusion.

Check the blog regularly for various govt. papers and tricks.

Transformer Rating

Why Transformer rating is expressed in kva and kw?

Ans:

In a transformer, the constant loss such as iron depends on voltage and the other loss, the copper loss depends on current. And powerfactor has nothing to do in the transformer.

The above mentioned reason is why the transformer is denoted in kva and not in kw

Mystery of Ohms law

According, to ohms law V proportional I but, practically it not applicable. Why??

Ans: The main condition for ohms law is that the temperature should be constant. But, practically when current passes through a wire the temperature around the wire doesn’t be constant. That’s the main reason why ohms law is practically not applicable.

OHMS LAW:- UNDER CONSTANT TEMPERATURE, VOLTAGE IS PROPORTIONAL TO CURRENT.

Trigonometry in One Piece

For all who are searching for trigonometrical formulas the below link will certainly help.

Hope it was useful..

http://www.ziddu.com/download/9140645/all_about_trignometry.pdf.html