Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.6. 1. 0.8. 0.4. 0.6. 1. 0.8. 0.4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on shaft torque. synchronous speed. rotor speed. core loss component. shaft torque. synchronous speed. rotor speed. core loss component. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake both 1 and 2 non reversing drive reversing drive None of these both 1 and 2 non reversing drive reversing drive None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 55 kVA single phase alternator has an effective resistance of 0.5 Ω. An excitation current of 10 A produces 200 A armature current on short circuit and an emf of 450 V on per circuit. The synchronous reactance will be 25.564 Ω. 2.241 Ω. 2.781 Ω. 2.74 Ω. 25.564 Ω. 2.241 Ω. 2.781 Ω. 2.74 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 volt dc motor has an armature winding resistance of 0.5 ohm. Calculate the emf induced by the motor if the full load armature current is 23 ampere. 120 volt. 220.4 volt. 218.5 volt. None of these. 120 volt. 220.4 volt. 218.5 volt. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor torque or load angle δ ------------- with increase in load increases decreases None of these remains unaffected increases decreases None of these remains unaffected ANSWER DOWNLOAD EXAMIANS APP
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