(c) A DC shunt motor with compensating windings as shown in Figure Q3(e) has a rating of 70 hp, 270 V and 1350 rpm with an armature resistance of 0.05 2. The field circuit, Red + Re has a total resistance of 3002 which produces a no- load speed of 1400 rpm while the shunt field winding has 1500 turns per pole. (1) Find the induced torque if the input current is 100 A and 200 A. PE (ii) Plot the torque-speed characteristic curve of the motor by using the result obtained in Q3(c)(i). Analyze your findings.

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(c) A DC shunt motor with compensating windings as shown in Figure Q3(e) has
a rating of 70 hp, 270 V and 1350 rpm with an armature resistance of 0.05 2.
The field circuit, Rad + Re has a total resistance of 3002 which produces a no-
load speed of 1400 rpm while the shunt field winding has 1500 turns per pole.
(1) Find the induced torque if the input current is 100 A and 200 A.
(ii) Plot the torque-speed characteristic curve of the motor by using the
result obtained in Q3(c)(i). Analyze your findings.
Transcribed Image Text:(c) A DC shunt motor with compensating windings as shown in Figure Q3(e) has a rating of 70 hp, 270 V and 1350 rpm with an armature resistance of 0.05 2. The field circuit, Rad + Re has a total resistance of 3002 which produces a no- load speed of 1400 rpm while the shunt field winding has 1500 turns per pole. (1) Find the induced torque if the input current is 100 A and 200 A. (ii) Plot the torque-speed characteristic curve of the motor by using the result obtained in Q3(c)(i). Analyze your findings.
Ose
OE
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Figine Q36)
9-27W
Transcribed Image Text:Ose OE -4 Figine Q36) 9-27W
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