Electrical Machines What is power factor of a 3 - φ induction motor at no load? Equal to 1. High. Same as full load. Low. Equal to 1. High. Same as full load. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Delta - delta Delta - star Star - star Star - delta Delta - delta Delta - star Star - star Star - delta ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the armature of DC motor is directly proportional to The voltage across the terminals. The speed of motor. The torque required. None of above. The voltage across the terminals. The speed of motor. The torque required. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of None of these permanent magnets. armature reaction. residual magnetism. None of these permanent magnets. armature reaction. residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on both 1and 2 load angle synchronous reactance excitation both 1and 2 load angle synchronous reactance excitation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed? 15.28 Nm 15.6 Nm Zero 16.55 Nm 15.28 Nm 15.6 Nm Zero 16.55 Nm ANSWER DOWNLOAD EXAMIANS APP
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