Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 4. 6. 2. 8. 4. 6. 2. 8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 234.76 N-m. 266.20 N-m. 133.22 N-m cant be determined. 234.76 N-m. 266.20 N-m. 133.22 N-m cant be determined. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be proportional to square of rotor speed. constant independent of speed. proportional to rotor speed. zero. proportional to square of rotor speed. constant independent of speed. proportional to rotor speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of rotation of DC motor is reversed by Adding resistance to field circuit. Interchanging armature and field connection. Reversing supply connection. Reversing armature connection or field connection. Adding resistance to field circuit. Interchanging armature and field connection. Reversing supply connection. Reversing armature connection or field connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on dielectric losses. core losses. copper losses. stray losses. dielectric losses. core losses. copper losses. stray losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature of DC machine is made of silicon steel. conducting material. insulating material. non-ferrous material. silicon steel. conducting material. insulating material. non-ferrous material. ANSWER DOWNLOAD EXAMIANS APP
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