Electrical Machines In DC generators brushes are used for convert ac armature current in to dc collecting of voltage collecting of current without any sparkings reduce eddy current loss convert ac armature current in to dc collecting of voltage collecting of current without any sparkings reduce eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator increases armature speed. reduces inter poles flux density. results in sparking trouble. reduces generator emf. increases armature speed. reduces inter poles flux density. results in sparking trouble. reduces generator emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following alternators contain large number of poles? Turbo alternators. Hydro alternators. Aame in both alternators. None of these Turbo alternators. Hydro alternators. Aame in both alternators. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? K × input power both A and B (1-K) × input power None of these K × input power both A and B (1-K) × input power None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 4 point starter 3 point starter All of these 2 point starter 4 point starter 3 point starter All of these 2 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of hysteresis motor. stepper motor. squirrel cage induction motor. slip ring induction motor. hysteresis motor. stepper motor. squirrel cage induction motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
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