For an induction machine rated at 150 V and 3.5 kW, with 90% efficiency, if the armature current is increased to 200% of its rated value, the machine's rated current would be ______?

1.5 times the rated current

3 times the rated current

2 times the rated current

1.2 times the rated current

If the armature current is maintained at 200% of its rated value, the machine's rated current would be 2 times the rated current.

This is because the current is doubled from its rated value.