Electrical Machines If two 8-pole dc machines of identical armature sare wound, one with lap winding and the other with wave winding, then wave-wound machine will have more rated current and more voltage lap-wound machine will have more rated voltage and less current wave-wound machine will have more rated voltage and less current lap-wound machine will have more rated voltage and more current wave-wound machine will have more rated current and more voltage lap-wound machine will have more rated voltage and less current wave-wound machine will have more rated voltage and less current lap-wound machine will have more rated voltage and more current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 4 pole, 50 Hz induction motor 4 % slip, calculate frequency of the rotor emf? 3 Hz. 50 Hz. 10 Hz. 2 Hz. 3 Hz. 50 Hz. 10 Hz. 2 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 40, s = 5.79 %. P = 20, s = 3.33 %. P = 60, s = 0.96 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 20, s = 3.33 %. P = 60, s = 0.96 %. P = 50, s = 4.43 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of transformer. condition of bushing stud. condition of transformer oil. condition of bushings. condition of transformer. condition of bushing stud. condition of transformer oil. condition of bushings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For an ideal transformer the winding should have no ohmic resistance on either side maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side equal resistance on primary and secondary side no ohmic resistance on either side maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side equal resistance on primary and secondary side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of the rotor bars of dc motors are laminated to provide better flux linkage. to reduce mechanical losses. to reduce eddy current loss. to reduce hysteresis loss. to provide better flux linkage. to reduce mechanical losses. to reduce eddy current loss. to reduce hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
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