Electrical Machines The power flow of a dc motor, with respect to a DC generator is reversed. increased. none of these. modified. reversed. increased. none of these. modified. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be 700 W 600 W 625 W 650 W 700 W 600 W 625 W 650 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 volt dc series motor having an armature resistance of 0.2 Ω takes a load current of 60 A. What will be the torque produced at the shaft of the motor? Consider brush drop of 1V. 266.20 N-m. 234.76 N-m. 133.22 N-m can not be determined. 266.20 N-m. 234.76 N-m. 133.22 N-m can not be determined. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalanced supply voltage given to a 3 - φ, delta connected induction motor will cause negative sequence current. less heating of the rotor. all of these. less heating of the rotor. negative sequence current. less heating of the rotor. all of these. less heating of the rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stability of a synchronous motor ---------- with the increase in excitation. increases any of the above remains unaffected decreases increases any of the above remains unaffected decreases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in DC Shunt Motor the flux is reduced suddenly to zero, then the motor will attain dangerously high speed. the armature current will reduce. the motor will come to stop. the speed of motor will be reduced. the motor will attain dangerously high speed. the armature current will reduce. the motor will come to stop. the speed of motor will be reduced. ANSWER DOWNLOAD EXAMIANS APP
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