- 2 The Following Data Is Given For The Dc Machine Of Fig 2 Armature 12 Coils 10 Turns Per Coil Lap Wound Number Of Po 1 (49.01 KiB) Viewed 31 times
2 The following data is given for the DC machine of Fig.2. Armature: 12 coils, 10 turns per coil, Lap wound Number of poles: 24 E = 48V, Ra = 0.1ohm, Load torque = 1.5Nm Flux perpole = 1mWb Note: no load means a condition at which there is no mechanical load coupled to the shaft of the machine, and startup is a time at which machine is starting to speed up from standstill. a) b) c) d) e) (20 marks) What is the mode of operation of the machine (motor or generator)? The value of developed torque. Neglect losses.< The value of the armature current.< g) b) The value of the counter emf generated.< The shaft speed in rpm. The shaft speed at startup in rpm. The armature current la at startup. The developed torque at no load. Neglect losses. The armature current la at no load.e The motor speed at no load in rpm. D) la ww R₂ or E Ec ضبو Armature Load L