engineering recuitment UPCL AE (E&M) 2021 Mock Test Electrical Machines DC Motor DC Motor Characteristics
A 200 V dc motor takes 50 A in series and is operating at a speed of 1000 rpm when full of electrical components (load). Its resistance is 0.2 Ω. What value of series resistance will offer a rated torque at 800 rpm?
1
3.8 Ω
2
0.76 Ω
3
0.54 Ω
4
2.6 Ω