PRINT COMPANION - BUS DRIVEN INFO SYS
6th Edition
ISBN: 9781264115273
Author: BALTZAN
Publisher: MCG
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Chapter 9, Problem 2CCT
To determine
The reason that the words and andor results in ambiguous requirements.
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1- Present worth analysis
An Environmental engineer is considering two materials for use in a sustainable
building. All estimates are made below. (a) Which should be selected on the basis
of a present worth comparison at an interest rate of 12% per year? (b) At what
first cost for the material not selected above will it become the more economical
alternative?
يفكر مهندس بيئة في الاختيار بين مادتين لاستخدامهما في انشاء مبنى مستدام كافة البيانات
الاقتصادية الخاصة بالمادتين مذكورة في الجدول ادناه.
(أ) أي المادتين ستختار على أساس مقارنة القيمة الحالية ) present worth analysis) اذا كان
معدل الفائدة 12% سنويًا؟
(ب) كم يجب ان تصبح الكلفة الاولية رأس المال) للمادة غير المختارة أعلاه لتصبح البديل الافضل
اقتصاديا؟
Material A
First Cost
15000
Maintenance cost
9000
Salvage value
2000
Life
5
Material B
35000
7000
20000
5
2- IRR analysis
A manufacturer of hydraulic equipment is trying to determine whether it should
use monoflange double block and bleed (DBB) valves or a multi-valve system
(MVS) for…
Report:-
1. Plot (total core loss / cycle) as a function of frequency.
2. Evaluate (K & K2 )corresponding to value of (voltage & frequency).
3. Calculate hysteresis and eddy current losses at rated voltage and
frequency.
A shaft is loaded in bending and torsion such that Ma = 70 N·m, T₁ = 45 N · m, M =
55 N. m, and T = 35 N m. For the shaft, S₁ = 700 MPa and S = 560 MPa, and a fully
corrected endurance limit of S₂ = 210 MPa is assumed. Let K = 2.2 and K = 1.8. With a
Se
design factor of 2.0 determine the minimum acceptable diameter of the shaft using the
a) DE- Goodman
b) DE-Morrow
c) DE-Gerber
d) DE-SWT
Chapter 9 Solutions
PRINT COMPANION - BUS DRIVEN INFO SYS
Ch. 9 - Prob. 1OCQCh. 9 - Prob. 2OCQCh. 9 - Prob. 3OCQCh. 9 - Prob. 4OCQCh. 9 - Prob. 5OCQCh. 9 - Prob. 6OCQCh. 9 - Prob. 1RQCh. 9 - Prob. 2RQCh. 9 - Prob. 3RQCh. 9 - Prob. 4RQ
Ch. 9 - Prob. 5RQCh. 9 - Prob. 6RQCh. 9 - Prob. 7RQCh. 9 - Prob. 8RQCh. 9 - Prob. 9RQCh. 9 - Prob. 10RQCh. 9 - Prob. 11RQCh. 9 - Prob. 12RQCh. 9 - Prob. 13RQCh. 9 - Prob. 14RQCh. 9 - Prob. 15RQCh. 9 - Prob. 1CCOCh. 9 - Prob. 2CCOCh. 9 - Prob. 3CCOCh. 9 - Prob. 4CCOCh. 9 - Prob. 1CCTCh. 9 - Prob. 2CCTCh. 9 - Prob. 3CCTCh. 9 - Prob. 4CCTCh. 9 - Prob. 1CBTCh. 9 - Prob. 2CBTCh. 9 - Prob. 3CBTCh. 9 - Prob. 4CBTCh. 9 - Prob. 5CBTCh. 9 - Prob. 6CBTCh. 9 - Prob. 7CBTCh. 9 - Prob. PIAYKBPCh. 9 - Prob. PIIAYKBPCh. 9 - Prob. PIIIAYKBPCh. 9 - Prob. PIVAYKBPCh. 9 - Prob. PVAYKBPCh. 9 - Prob. PVIAYKBP
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