EBK BUSINESS DRIVEN INFORMATION SYSTEMS
6th Edition
ISBN: 8220106796986
Author: BALTZAN
Publisher: YUZU
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Chapter 9, Problem 4CCO
To determine
The reason for BAE to not take an existing IT infrastructure and simply increase its scale and expect it to work.
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4. Consider the RL circuit with a sinusoid voltage source shown in the diagram below. The values
of the resistor, inductor, input voltage amplitude and frequency are R = 5, L = 50mH,
and Vo = 10 V, respectively. The input voltage frequency w is variable. Assume that the
circuit has reached steady state.
Voejwt
+
↑i(t)
R
سيد
The input voltage can be described using the complex sinusoid function
V(t) = Voejwt
The current is given by a sinusoid with same the frequency was the input voltage, but a
different magnitude and different phase. The physical voltage and current are obtained by
taking the real part. In complex form, the current is given by
i(t)
Vo ejwt
R1+jw/
The differential equation that describes the current follows from Kirchoff's voltage law, and
is given by
di(t)
L + Ri(t)
=
Voejwt
dt
2. (4 marks) Use the real and imaginary parts of ĉejut, where ñ = a + jb = e³, to show that:
c cos(wt) = acos(wt) – bsin(wt),
csin(wt) = a sin(wt) + bcos(wt).
Describe the relations between a, b, c, and o.
337 kN
-Weld
-25°
6 mm
PROBLEM 1.33
A steel pipe of 300 mm outer diameter is fabricated from 6 mm thick
plate by welding along a helix which forms an angle of 25° with a plane
perpendicular to the axis of the pipe. Knowing that the maximum
allowable normal and shearing stresses in directions respectively
normal and tangential to the weld are σ = 50 MPa and 7 = 30 MPa,
determine the magnitude P of the largest axial force that can be applied
to the pipe.
Chapter 9 Solutions
EBK BUSINESS DRIVEN INFORMATION SYSTEMS
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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