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 240 A. 173 A. 190 A. 127 A. 240 A. 173 A. 190 A. 127 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos α² Cos α sin (α/2) Cos (α/2) Cos α² Cos α sin (α/2) Cos (α/2) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ratio of starting torque to full load torque is minimum in Cumulative compound motor. Differential compound motor. Series motor. Shunt motor. Cumulative compound motor. Differential compound motor. Series motor. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? All of these increase the maintenance and repair increase the iron loss increases the design cost All of these increase the maintenance and repair increase the iron loss increases the design cost ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? S 1/S 1/(1-S) 1-S S 1/S 1/(1-S) 1-S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be 220 V. about 2 V. about 50 V. zero. 220 V. about 2 V. about 50 V. zero. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS