Electrical Machines In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch 1 50 10 100 1 50 10 100 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and flux of a DC motor are held constant and voltage applied across it armature is increased by 5%, the speed of the motor will Remain unchanged. Increase by 5%. Depends on other factor. Reduce by 5%. Remain unchanged. Increase by 5%. Depends on other factor. Reduce by 5%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their polarities are properly connected turn- ratios are exactly equal percentage impedances are equal KVA ratings are equal polarities are properly connected turn- ratios are exactly equal percentage impedances are equal KVA ratings are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 3 point starter 4 point starter All of these 2 point starter 3 point starter 4 point starter All of these 2 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 460 V 115 V 230 V 65 V 460 V 115 V 230 V 65 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field in reverse. to earth. to a DC source. to an AC source. in reverse. to earth. to a DC source. to an AC source. ANSWER DOWNLOAD EXAMIANS APP
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