Electrical Machines The heat generated in the transformer is dissipated mainly by convection. radiation. conduction. All of these convection. radiation. conduction. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be series. no resistance is connected. any one of the connection. parallel. series. no resistance is connected. any one of the connection. parallel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following alternators contain large number of poles? Turbo alternators. None of these Hydro alternators. Aame in both alternators. Turbo alternators. None of these Hydro alternators. Aame in both alternators. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a star - delta starting of an IM applied voltage per stator phase is 57.7 % of a line volt resistance is inserted in the rotor. line voltage is 57.7 % of stator voltage. reduced voltage is applied to the stator. applied voltage per stator phase is 57.7 % of a line volt resistance is inserted in the rotor. line voltage is 57.7 % of stator voltage. reduced voltage is applied to the stator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is Fmax. (1/2)Fmax. (3/2)Fmax. 3Fmax. Fmax. (1/2)Fmax. (3/2)Fmax. 3Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 190 A. 173 A. 240 A. 127 A. 190 A. 173 A. 240 A. 127 A. ANSWER DOWNLOAD EXAMIANS APP
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