EBK BUSINESS DRIVEN INFORMATION SYSTEMS
6th Edition
ISBN: 8220106796986
Author: BALTZAN
Publisher: YUZU
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Chapter 1, Problem 4CBT
To determine
To Find:
The most recent list of Fortune magazine list of the top 100 companies. What types of data do you think Fortune analyzed to determine the company ranking? What issue could occur if the analysis of the data was inaccurate? What types of information can you give by analyzing the list? Create five questions a student performing a job search could answer by analyzing this list.
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Students have asked these similar questions
Show with the aid of a phasor diagram that for both
star- and delta-connected balanced loads, the total active
power is given by √3VI cos φ, where V and I are the
line values of voltage and current respectively and φ is
the angle between phase values of voltage and current.
A balanced three-phase load consists of three
coils, each of resistance 4 Ω and inductance 0.02 H.
Determine the total active power when the coils are (a)
star-connected, (b) delta-connected to a 400 V, three
phase, 50 Hz supply.
ANS:11.56 kW, 34.7 kW
The load connected to a three-phase supply comprises
three similar coils connected in star. The line currents
are 25 A and the apparent and active power inputs are
20 kVA and 11 kW respectively. Find the line and
phase voltages, reactive power input and the resistance
and reactance of each coil. If the coils are now con
nected in delta to the same three-phase supply, calculate
the line currents and the active power taken. ANS :
462 V, 267 V, 16.7 kvar, 5.87 Ω, 8.92 Ω; 75 A, 33 kW
A three-phase delta-connected load, each phase of which
has an inductive reactance of 40 Ω and a resistance
of 25 Ω, is fed from the secondary of a three-phase
star-connected transformer which has a phase voltage
of 230 V. Draw the circuit diagram of the system and
calculate: (a) the current in each phase of the load; (b)
the p.d. across each phase of the load; (c) the current
in the transformer secondary windings; the total
active power taken from the supply and its power factor.
Chapter 1 Solutions
EBK BUSINESS DRIVEN INFORMATION SYSTEMS
Ch. 1 - Prob. 1OCQCh. 1 - Prob. 2OCQCh. 1 - Prob. 3OCQCh. 1 - Prob. 4OCQCh. 1 - Prob. 5OCQCh. 1 - Prob. 6OCQCh. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQ
Ch. 1 - Prob. 5RQCh. 1 - Prob. 6RQCh. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - Prob. 9RQCh. 1 - Prob. 10RQCh. 1 - Prob. 11RQCh. 1 - Prob. 12RQCh. 1 - Prob. 13RQCh. 1 - Prob. 14RQCh. 1 - Prob. 15RQCh. 1 - Prob. 1CCOCh. 1 - Prob. 2CCOCh. 1 - Prob. 3CCOCh. 1 - Prob. 4CCOCh. 1 - Prob. 5CCOCh. 1 - Prob. 6CCOCh. 1 - Prob. 1CCTCh. 1 - Prob. 2CCTCh. 1 - Prob. 3CCTCh. 1 - Prob. 4CCTCh. 1 - Prob. 5CCTCh. 1 - Prob. 6CCTCh. 1 - Prob. 1CBTCh. 1 - Prob. 2CBTCh. 1 - Prob. 3CBTCh. 1 - Prob. 4CBTCh. 1 - Prob. 5CBTCh. 1 - Prob. 6CBTCh. 1 - Prob. 7CBTCh. 1 - Prob. 8CBTCh. 1 - Prob. 9CBTCh. 1 - Prob. 10CBTCh. 1 - Prob. 11CBTCh. 1 - Prob. 12CBTCh. 1 - Prob. 13CBTCh. 1 - Prob. 14CBTCh. 1 - Prob. PIAYKBPCh. 1 - Prob. PIIAYKBPCh. 1 - Prob. PIIIAYKBPCh. 1 - Prob. PIVAYKBPCh. 1 - Prob. PVIAYKBPCh. 1 - Prob. PVIIAYKBPCh. 1 - Prob. PVIIIAYKBPCh. 1 - Prob. PIXAYKBPCh. 1 - Prob. PXAYKBPCh. 1 - Prob. PXIAYKBP
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