Hydro electric station is installed to utilise 30 ma/sec of water of a river at a head of 7.5 m. If 85% turbine efficiency can be counted on, (i) is it feasible to develop this power by two turbines with rpm not less ? than 50, the turbine having specific speed not greater than 540 rpm (ii) what type of runner will be used ? (iii) what is the diameter of runner if the speed ratio is 0.85? [(i) N= = 156'5 rpm, .. yes (ii) Kaplan (iii) P25 m]

Hydro electric station is installed to utilise 30 ma/sec of water of a river at a head of 7.5 m. If 85% turbine efficiency can be counted on, (i) is it feasible to develop this power by two turbines with rpm not less ? than 50, the turbine having specific speed not greater than 540 rpm (ii) what type of runner will be used ? (iii) what is the diameter of runner if the speed ratio is 0.85? [(i) N= = 156'5 rpm, .. yes (ii) Kaplan (iii) P25 m]

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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