EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
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Chapter 44, Problem 2SQ
To determine
Explain the reason to connect a resistor in series with an armature only than with the entire shunt motor.
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A three-phase transmission line supplies power to three loads at a voltage
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Load 3:
S3 = 10 + j0 VA
Find the magnitude of the line current | Line and the combined power factor of
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Hint:
Steral \= √3 | Vime |× | Ime |
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Can you show why the answer to this question R = 199 ohm?
2.5. Find the half-power beamwidth (HPBW) and first-null beamwidth (FNBW), in radians and degrees, for the following normalized radiation intensities: (a) U(9) cos θ cos(20) (b) U(θ)-cos2 θ cos2(26) (c) U(θ) = cos(θ) cos(30) (0 < θ < 900,0 < φ 360) (d) U(t) = cos2(9) cos2(39) (e) U(9) = cos(29) cos(39) (f) U (ecos (20) cos (30)
Chapter 44 Solutions
EBK ELECTRIC MOTOR CONTROL
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