![]() ![]() E is less than E0 due to the demagnetizing effect of armature reaction. on load (E) and the armature current (Ia). curve are obtained experimentally by operating the generator at no load and constant speed and recording the change in terminal voltage as the field current is varied. Its shape is practically the same for all generators whether separately or self-excited. It is also known as magnetic characteristic or no-load saturation curve. ![]() But since the output voltage may be controlled more easily and over a wide range (from zero to a maximum), this type of excitation finds many applications.Īt no-load (E0) and the field current (If) at constant speed. of even self-excited generator is obtained by running it as a separately excited generator. (iv) After point C on the curve, the magnetic saturation of poles begins and E0 tends to level off. Consequently, the curve deviates from linear relationship. It is because at higher flux densities, µr for iron decreases and reluctance of iron is no longer negligible. Iii) After point B on the curve, the reluctance of iron also comes into picture. Since there is only one current (that which flows through the whole machine), the load current is the same as the exciting current. 7) (i) shows the connections of a series wound generator. ![]() of electrical machines mehta pdf, principles of electrical machines vk mehta pdf free download. 7 Characteristics of Series Generator Fig. Principles Of Electrical Machines By Vk Mehta Pdf 23. Note that in a series generator, field current = load current IL. 6) load current IL is represented along Y-axis. 5), field current alone is represented along X-axis. OL27696090W Page_number_confidence 97.65 Pages 598 Partner Innodata Pdf_module_version 0.0.18 Ppi 360 Rcs_key 24143 Republisher_date 20220321140018 Republisher_operator Republisher_time 1971 Scandate 20220315175404 Scanner Scanningcenter cebu Scribe3_search_catalog isbn Scribe3_search_id 9788121906326 Tts_version 4.However, R1, R2 etc. Access-restricted-item true Addeddate 10:11:03 Associated-names Mehta, Rohit Autocrop_version 0.0.5_books-20210916-0.1 Bookplateleaf 0002 Boxid IA40404513 Camera Sony Alpha-A6300 (Control) Collection_set printdisabled External-identifier ![]()
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