Observe the figure.a. Identify the device in figure 1? b. What is Rj and Bj indicate in the figure? c. What is the working principle of that device? d. Identify the graph which indicate the emf produced by that device? e. Suggest a way of method to increase the value of emf produced in armature coil of the device?f. Which law is related with the direction of the induced emf in the armature? Explain? g. Which part is used as rotor? h. Which part is used as stator? i. What are the advantages of armature used as stator?j. Identify the device in figure 2? k. Identify the graph given above of emf which is produced by that device? l. What is the angle between the armature coils of a three-phase generator? m. Some statements are given below which related to single-phase generator and three-phase generator. Classify them. a. For each field magnet, there is only one armature. b. There are three sets of armature coils for each field magnet. c. AC generated in all the armature coils will be of the same phase at the same time. d. AC generated in all the three armature coils will be of different phase at the same time.