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5.2. (15 pt.) A shunt DC motor has the following characteristics Prated 30 hp, Vt = 240 V; nated 1200 rpm Ra-0.19 Ω; Rs 0.02

320 Speed = 1200 r/min 240 き 200 180 3 160 140 120 100 0 0. 0.2 0.3 04 0.5 0.6 0.7 0.8 0.9 1.0 1. 2 13 1.4 Shunt field curren

0 0.19 Ω Radj 75Ω V 240 V Lf Figure 5-2 a) If the resistor Radj is adjusted to 175 Ω, what is the rotational speed of the mot

b) If Radj can be adjusted from 100 to 400 2, what are the maximum and minimum no-load speeds possible with this mt of this m

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Answer #1

ven voltage / v -2HCV CuuTf Ry 75.l 3350 u full d 1200 Y pm153. 2 4 = no-32 219.86 volts Naw. h. Then total Rasyanf 2.5oセ) Then 219. 28 V spa famula Eb, N, Eb 1200 o6. 1225.vpm

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