railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines DC Motor DC Motor Efficiency

A 400 V DC series motor develops shaft torque of 200 Nm at 80 percent efficiency while running at 1200 rpm. The current drawn by the motor in amperes is?

1
16π 
2
100π 
3
25π 
4
50π 
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