engineering recuitment GATE EE 2023-24 Test Series Electrical Machines DC Motor

A 260 V DC series motor takes 60 A when giving its rated output at 1200 rpm. Its resistance is 0.5 ohm. The value of the resistance which must be added to obtain rated torque at 800 rpm is

1
1.28 ohm
2
2.82 ohm
3
3.75 ohm
4
5.42 ohm
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