Is norway a good country for mechanical engineer .

Even for qualified professional EU citizens Norway has a lot of things going against it. The simplest factor is the cold. It's remarkably common for tax deduction to "go missing" after they've been deducted by Norwegian firms and the government fines and punishes the foreign workers, not the Norwegian firms. There is SO much that has to go right I would advise you to try elsewhere.

"In late March, another study, this one from KPMG, the international accounting and consulting firm, cast light on this paradox. It indicated that when disposable income was adjusted for cost of living, Scandinavians were the poorest people in Western Europe. Danes had the lowest adjusted income, Norwegians the second lowest, Swedes the third. Spain and Portugal, with two of Europe's least regulated economies, led the list.

Most recently, the Danish Ministry of Finance released a study comparing the income available for private consumption in 30 countries. Norway did somewhat better here than in the KPMG study, lagging behind most of Western Europe but at least beating out Ireland and Portugal." from nytimes.com/2005/04/17/weekinreview/17bawer.html?pagewanted=print&position=&_r=0