Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction motor a synchronous motor None of these an induction generator an induction motor a synchronous motor None of these an induction generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the armature electric current is increased to double its previous value, and the time of commutation is halved, how will the reactance voltage vary? It will be doubled. It will be halved. It will remain the same. It will becomes four times. It will be doubled. It will be halved. It will remain the same. It will becomes four times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum power developed in cylindrical synchronous machine is occurs at a load angle of Greater than 90o. 0o. less than 90o. 90o. Greater than 90o. 0o. less than 90o. 90o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing the field of DC generator means increasing flux density by adding extra turns of winding. making the magnetic losses forces parallel. creating residual magnetism by a DC source. neutralising residual magnetism. increasing flux density by adding extra turns of winding. making the magnetic losses forces parallel. creating residual magnetism by a DC source. neutralising residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following alternators contain large number of poles? Hydro alternators. Turbo alternators. Aame in both alternators. None of these Hydro alternators. Turbo alternators. Aame in both alternators. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? Copper loss both 1 and 2 core loss only windage and friction loss Copper loss both 1 and 2 core loss only windage and friction loss ANSWER DOWNLOAD EXAMIANS APP
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