Question 2 i. the back emf. a) A 240 V separately excited de motor has an armature resistance of 0.68 ohm and draws a full-load current of 24 A at a speed of 100 rpm. Calculate: [2 marks] [2 marks] [2 marks] ii. the output power developed. iii. the torque developed. b) When a dc generator is being driven at 1200 rpm, the generated emf is 125 V. What will be the generated emf if i. the field flux is decreased by 10% with the speed remains unchanged? [2 marks] ii. the speed is reduced to 1100 rpm, the field flux remains unchanged? [2 marks] c) State three losses in DC motor. [3 marks] d) Transformers can be classified by their frequency range. Give any two of them. [2 marks]