Business Driven Information Systems
6th Edition
ISBN: 9781260004717
Author: Paige Baltzan
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 7, Problem 4CCO
To determine
Advantages of wireless network to Denver B-cycle.
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A dc motor connected to a 240 V line pro-
duces a mechanical output of 160 hp.
Knowing that the losses are 12 kW, calculate
the input power and the line current.
A 115 V dc generator delivers 120 A to a
load. If the generator has an efficiency of
81 percent, calculate the mechanical power
needed to drive it [hp].
Question 2
The following strains are obtained by a 0-60-120 strain rosette: ε0 = 300 x 10-6, 60 =
200 x 10-6 and 120= 150 x 10-6.
i.
Determine strains Ex, Ey and Yxy
ii.
Determine the strains for 0 = 40°
iii.
Calculate principal strains, maximum shear strain and the orientation of
principal strains
iv.
Determine normal stresses (σx, σy) and shear stress (Txy), if E = 200kPa
and v = 0.25.
(Hint: You may use stress-strain relationship for plane strain,
summarised in matric format as follows:
E
σχ
бу
1-v
v
0
Ex
=
v
1-v
0
Ey
txy. (1+v)(1 − 2v) 0
0
0.5 v
Chapter 7 Solutions
Business Driven Information Systems
Ch. 7 - Prob. 1OCQCh. 7 - Prob. 2OCQCh. 7 - Prob. 3OCQCh. 7 - Prob. 4OCQCh. 7 - Prob. 5OCQCh. 7 - Prob. 6OCQCh. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQCh. 7 - Prob. 4RQ
Ch. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 1CCOCh. 7 - Prob. 2CCOCh. 7 - Prob. 3CCOCh. 7 - Prob. 4CCOCh. 7 - Prob. 1CCTCh. 7 - Prob. 2CCTCh. 7 - Prob. 3CCTCh. 7 - Prob. 4CCTCh. 7 - Prob. 1CBTCh. 7 - Prob. 2CBTCh. 7 - Prob. 3CBTCh. 7 - Prob. 4CBTCh. 7 - Prob. 5CBTCh. 7 - Prob. 6CBTCh. 7 - Prob. 7CBTCh. 7 - Prob. 8CBTCh. 7 - Prob. 9CBTCh. 7 - Prob. 10CBTCh. 7 - Prob. PIAYKBPCh. 7 - Prob. PIIAYKBPCh. 7 - Prob. PIIIAYKBPCh. 7 - Prob. PIVAYKBPCh. 7 - Prob. PVAYKBPCh. 7 - Prob. PVIAYKBPCh. 7 - Prob. PVIIAYKBPCh. 7 - Prob. PVIIIAYKBPCh. 7 - Prob. PIXAYKBP
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