B. Series dc motor with compensating winding, V+=250V, RA+R=0.5, N=50 turns per pole, the magnetization curve is given in the following table at 1200 rev/min: (7-marks) EA (V)80100120140160170180188190225 If (A) 8 10 12 14 18 20 22 24 25 50 a. Find the no-load speed. =20A. b. Find the speed and the torque if I₁ = c. If V+ decreased to 200V. Find the speed at the same load current. d. Find the speed, If V=200V and I₁ =50A.