Electrical Machines which of the following losses are negligible in blocked rotor test? mechanical loss copper loss both A and B iron loss mechanical loss copper loss both A and B iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing high resistance carbon brushes. compensating winding. any one or more of the above methods. inter poles. high resistance carbon brushes. compensating winding. any one or more of the above methods. inter poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 234 V 474 V 6 V 240 V 234 V 474 V 6 V 240 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In alternator, the rotary part is armature. magnetic field poles. core. none of these. armature. magnetic field poles. core. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the advantages of parallel operation of alternators? Increase efficiency under light load conditions continuity supply is maintained Increase in reliability All of these Increase efficiency under light load conditions continuity supply is maintained Increase in reliability All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Vt vs load current Eg vs Ia Eg vs load current Vt vs Ia Vt vs load current Eg vs Ia Eg vs load current Vt vs Ia ANSWER DOWNLOAD EXAMIANS APP
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