Video narration
Nali ka munh dhakte hi paani chhoti opening se tez kyon nikalta hai - kya tez flow ka matlab zyada pressure hai? Nali mein urja ka budget pressure, gati aur oonchai mein banta hai. Samaan oonchai par, speed badhe to static pressure ghatta hai. Isi urja-bantvare ko Bernoulli's theorem kehte hain. Yeh steady, ideal flow mein streamline par lagu hai. Isliye opening urja nahin banati; pressure energy motion mein badalti hai. Paani tez nikalta hai: energy gati mein jaati hai, pressure ghatta hai.