Electrical Machines Which of the following induction motor has the highest starting torque? 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. Squirrel cage induction motor. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is 1.92 -0.08 -1.92 0.08 1.92 -0.08 -1.92 0.08 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical load on it because otherwise it will draw too much current. develop excessive speed and damage itself. produce sparking at brushes. open fuse or circuit breaker. draw too much current. develop excessive speed and damage itself. produce sparking at brushes. open fuse or circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be 0.72. 0.62. 0.25. 1.24. 0.72. 0.62. 0.25. 1.24. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction effect is more in which of the following methods? same in both methods armature resistance control field weakening method None of these same in both methods armature resistance control field weakening method None of these ANSWER DOWNLOAD EXAMIANS APP
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