Electrical Machines In a DC generator in case the brushes are moved so as to bring them in magnetic neutral axis, then, there will be cross-magnetization as well as demagnetization. none of above. demagnetisation. cross-magnetisation. cross-magnetization as well as demagnetization. none of above. demagnetisation. cross-magnetisation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is none. 1 : 1. N12 : N22. N1 : N2. none. 1 : 1. N12 : N22. N1 : N2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum possible speed at which an alternator can be driven to generate 50 Hz and 4000 V is 3600 rpm. 3000 rpm. 1500 rpm. 4000 rpm. 3600 rpm. 3000 rpm. 1500 rpm. 4000 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is normal speed. more than normal speed. less than normal speed. zero. normal speed. more than normal speed. less than normal speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For very sensitive and wide speed control, the preferable control method is Armature control. Ward-Leonard control. Field control. Multiple voltage control. Armature control. Ward-Leonard control. Field control. Multiple voltage control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has the highest starting torque? Squirrel cage induction motor. None of these Slip ring induction motor. Same in both induction motors. Squirrel cage induction motor. None of these Slip ring induction motor. Same in both induction motors. ANSWER DOWNLOAD EXAMIANS APP
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