Electrical Machines A 3 - Φ induction motor draws an current of 50 A from mains when starts by direct switching. If an auto transformer with 60 % tapping is used for starting the current drawn from the mains will be 18. 50. 36. 80. 18. 50. 36. 80. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is ineffective. cross – magnetizing. demagnetizing. magnetizing. ineffective. cross – magnetizing. demagnetizing. magnetizing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is also called as-----------? constant current control constant voltage control constant torque control constant power control constant current control constant voltage control constant torque control constant power control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Universal motors are used in cranes traction food processing All of these cranes traction food processing All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator on no-load, the air gap flux distribution in space is pulsating. triangular. flat topped. sinusoidal. pulsating. triangular. flat topped. sinusoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is (1 / 15) times the synchronous speed. 0.5 times the synchronous speed. (1 / 5) times the synchronous speed. 5 times the synchronous speed. (1 / 15) times the synchronous speed. 0.5 times the synchronous speed. (1 / 5) times the synchronous speed. 5 times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP