GATE EE · 2020 · EE
Question 28: Electrical Machines
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Question 28
EEMCQ2 marksNeeds review
A 250 V dc shunt motor has an armature resistance of 0.2
and a field resistance of 100
. When the motor is operated on no-load at rated voltage, it draws an armature current of 5 A and runs at 1200 rpm. When a load is coupled to the motor, it draws total line current of 50 A at rated voltage, with a 5 % reduction in the air-gap flux due to armature reaction. Voltage drop across the brushes can be taken as 1 V per brush under all operating conditions. The speed of the motor, in rpm, under this load condition, is closest to:Your answerChoose one option.
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2020EE
GATE EE 2020 · Paper 1
Electrical Engineering · Original paper archive
- Section
- Electrical Engineering
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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