Pard - 30 hp V; - 240 V "ted - 1800 r/min R-0.19 Q R -0.02 N Iend - 110 A N, - 2700 turns per pole Ngg - 14 turns per pole R, - 75 2 R - 100 to 400 N %3D

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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Ied - 110 A
N - 2700 turns per pole
NSE - 14 turns per pole
Prd - 30 hp
V, = 240 V
ned - 1800 r/min
R -0.19 Q
R = 0.02 N
R, - 75 Q
R = 100 to 400 2
Magnetization curve
300
280
260
Speed - 1800 r/in
240
220
> 200
180
160
140
120
100
80
60
40
20
0 0.1 02 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1 1.1 12 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Shunt field curent, A
The motor is connected in shunt. If Radj can be adjusted from 100 to 400 W, what are the maximum and minimum no-load speeds possible with this motor?
NOTE: Magnetization curve is given for 1800 rpm.
(a) Maximum speed in rpm
(b) Minimum speed in rpm
Internal generated voltage E, V
Transcribed Image Text:Ied - 110 A N - 2700 turns per pole NSE - 14 turns per pole Prd - 30 hp V, = 240 V ned - 1800 r/min R -0.19 Q R = 0.02 N R, - 75 Q R = 100 to 400 2 Magnetization curve 300 280 260 Speed - 1800 r/in 240 220 > 200 180 160 140 120 100 80 60 40 20 0 0.1 02 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 12 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 Shunt field curent, A The motor is connected in shunt. If Radj can be adjusted from 100 to 400 W, what are the maximum and minimum no-load speeds possible with this motor? NOTE: Magnetization curve is given for 1800 rpm. (a) Maximum speed in rpm (b) Minimum speed in rpm Internal generated voltage E, V
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