Electrical Engineering > GATE 2013 SET-1 > DC-DC Converters
The separately excited dc motor in the figure below has a rated armature current of 20 A and a rated armature voltage of 150 V. An ideal chopper switching at 5 kHz is used to control the armature voltage. If L<sub>a</sub> = 0.1 mH, R<sub>a</sub> = 1 Ω, neglecting armature reaction, the duty ratio of the chopper to obtain 50% of the rated torque at the rated speed and the rated field current is
A
0.4
B
0.5
C
0.6
D
0.7

Correct :

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Related Topics

dc motor control separately excited motor chopper control electrical engineering gate torque control motor armature voltage motor speed control motor field current chopper duty ratio gate electrical engineering 2013 motor armature reactance

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