Question
How exactly do we pronounce the tanween bil fath at the end of a word? I heard some qaari sounded them as if there was a hamzah at the end. Thanks.
Answer
Assalaam alaikum. 
When stopping on a word that has a tanween fathah, we stop with an alif of two vowel counts, except in the case of the female ha'.
This alif should be free from any extra letters such as a hamzah, or ha', or 'ayn.  Some readers make the mistake of unknowingly adding a hamzah on the end of the two count alif when stopping on the word.  This is a mistake in tilaawah and should be corrected as it has added a letter that is not present in the Qur'an. 

When continuing reading a word witha tanween fathah, the appropriate noon saakinah rule is applied. 

For more information, please see: http://www.abouttajweed.com/the-mudood-the-lengthenings-/the-mudood-lengthenings-part-3.html
You are welcome