2) Compute the total electromagnetic torque T, and the rotor speed when the duty cycle is equal to 0.8 in the following three cases. a) The separately excited connection in Fig. 2. Consider. Voc=200V, R₂ = 10, La = 80mH, Lm = 2H,J = 0.005 kgm², B₁ = 0.0015 Nm/rad, i, = 1A. Ra ka Tue VDC Fig. 2. H-bridge drive system for separately excited DC motor 3 b) The shunt excited connection in Fig. 2. Consider: VDC Vpc = 200V, R₂ = 10, La = 80mH, Lm = 2H,J = 0.005 kgm², R, = 2000, L = 20H, B₁ = 0.0015 Nm/rad. + Va 4 R₂ Luly M000 4 R₂ Fig. 2. H-bridge drive system for a shunt DC motor V₁ [10]

Fig: 1