Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is of low resistivity. lighter in weight. easy to cast owing to its low melting point and is easily available. cheaper in cost. of low resistivity. lighter in weight. easy to cast owing to its low melting point and is easily available. cheaper in cost. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 5 Hz 50 Hz 0 Hz 1 Hz 5 Hz 50 Hz 0 Hz 1 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a fault at the terminal of a synchronous generator, the fault current is maximum for a line to line fault. line to ground fault. 3 - phase to ground fault. 3 - phase fault. line to line fault. line to ground fault. 3 - phase to ground fault. 3 - phase fault. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 1, 3 1, 4 2, 3 2, 4 1, 3 1, 4 2, 3 2, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating part of DC motor is known as Armature. Carbone brush. Starter. Pole. Armature. Carbone brush. Starter. Pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has low ratings only? Capacitor run Shaded pole Resistance split phase Capacitor start Capacitor run Shaded pole Resistance split phase Capacitor start ANSWER DOWNLOAD EXAMIANS APP
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