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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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Use only the MD below to solve this Item; use it by plotting data and process to determine items being asked.

Steam enters a turbine at 117.4308 atmgage and 932 deg. F, and expands isentropicaly to 177.17 inches of Hg. For 2 + (10/25) kg/sec of steam, what is (a) the ideal work done (KJ) if ∆KE = 0 and actual exhaust enthalpy is 2700 KJ/kg. a)Ans:_________________

(b)ne = _____________

(c)Determine: ideal steam moisture at exhaust. Ans:________________

(d) Actual steam quality at exhaust Ans: ________________

(e) Actual steam temp at the exhaust. Ans.__________

f) Degree SH of the steam at turbine inlet. Ans_____________

g) change in entropy during the actual process. Ans:__________________

800 C
750C
4000
650'C
600C
650°C
3500
500
460c
4000
300
3000
286°C
200C
150C
0.05
100
0.08
50e
24.1C
F175C wwwmw
2500
wwwwww w
0.90
D85
0.75
80
3, KJ/kg-K
2000
5.5
6.
6.5 7 7.5
8
8.5
Enthalpy - h - (kJ/kg)
000

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