Electrical Machines Which of the following induction motor has the highest starting torque? Slip ring induction motor. Same in both induction motors. None of these Squirrel cage induction motor. Slip ring induction motor. Same in both induction motors. None of these Squirrel cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Running torque. Rotor current. Line voltage. Slip. Running torque. Rotor current. Line voltage. Slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To have sparkless commutation, the armature reaction effect in a DC machine is neutralized by shifting the brush axis from GNA to MNA. fixing the brush axis inline with the pole axis. increasing field excitation. compensating winding and commutating poles. shifting the brush axis from GNA to MNA. fixing the brush axis inline with the pole axis. increasing field excitation. compensating winding and commutating poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will burn. start haunting. run at very low speed. run at very high speed. burn. start haunting. run at very low speed. run at very high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage of a DC motor is 230 V, then back emf, for maximum power developed is 460 V. 230 V. 200 V. 115 V. 460 V. 230 V. 200 V. 115 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then E ∝ 1/(φf) E ∝ φ/f E ∝ f/φ E ∝ φf E ∝ 1/(φf) E ∝ φ/f E ∝ f/φ E ∝ φf ANSWER DOWNLOAD EXAMIANS APP
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