MICROELECTRONIC CIRCUITS W/LAB MAN >P<
8th Edition
ISBN: 9780197529362
Author: SEDRA
Publisher: OXF
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".I need the correct answers with explanations"
Q1: What is the orientation of voltage regulation value (positive or negative) of
alternator loaded by capacitive load? Explain the effect of armature reaction on
voltage regulation for this load? Draw the load characteristics of alternator for
capacitive, inductive, and inductive loads?
Q2: A 2000 kVA,2200 V, 60 Hz,Y-connected alternator has a resistance of 0.25
between each pair of terminal. A field current of 80 A produces a short circuit current equal to full load
current in each line. The same field current produces an e.m.f of 800 V(L-L) on open circuit .Determine the full
load voltage regulation of alternator at unity p.f?
12. If the length of a transmission line increases, its inductance is
B. decreases
C. Constant
D. None of them
A. increases
13. When the regulation is negative, then receiving end voltage (VR) is.......... than sending and voltage (VS).
B. More
C. Equal
A. Less
D. None of the them
10. If the spacing between the conductors is decrease, the inductance of the line will be:
A. Increase B. decreases C. Not effected
D. Non of them
6. Cables have more effective in...
A. Inductance
B. Capacitance
than over head transmission lines
C. Resistance
D. All of the abov
7. By which of the following methods string efficiency can be equa! 100%
A. Using a guard ring B. Equal insulator voltage C. Using long cross arm D.Non of them
Power system
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