Electrical Machines Quadrature axis synchronous reactance is the ratio of Vmin to Imax. Vmax to Imin. Vmax to Imax. Vmin to Imin. Vmin to Imax. Vmax to Imin. Vmax to Imax. Vmin to Imin. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the highest possible speed of turbo alternators? 3000 rpm 4000 rpm 1000 rpm 1500 rpm 3000 rpm 4000 rpm 1000 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage if field resistance is more than critical resistance. due to wrong direction of rotation. any one of above. if it has lost residual magnetism. if field resistance is more than critical resistance. due to wrong direction of rotation. any one of above. if it has lost residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the synchronous reactance of alternators in which a given field current of 200 A on short circuit and a generated emf of 50 V on open circuit. Armature resistance is 0.1 ohm 0.25Ω. 1Ω. 0.23Ω. 0.5Ω. 0.25Ω. 1Ω. 0.23Ω. 0.5Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The commutator segments of DC machines are made up of copper alloy copper hard-drawn copper brass copper alloy copper hard-drawn copper brass 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 becomes four times. It will remain the same. It will be halved. It will be doubled. It will becomes four times. It will remain the same. It will be halved. ANSWER DOWNLOAD EXAMIANS APP
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