Electrical Machines Hunting in a synchronous cannot be due to variable frequency. variable load. variable supply voltage. windage friction. variable frequency. variable load. variable supply voltage. windage friction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor used in Lathe machine? None of these D.C. shunt motor. D.C . series motor. D.C. cumulative compound motor. None of these D.C. shunt motor. D.C . series motor. D.C. cumulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a dc motor the ratio Eb / E is indicative of ratio of input to output voltage. efficiency. ratio of starting to running current. ratio of starting to running torque. ratio of input to output voltage. efficiency. ratio of starting to running current. ratio of starting to running torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. decreased. increased. remains unchanged. kept constant to certain value. decreased. increased. remains unchanged. kept constant to certain value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC machine has an armature resistance 1Ω. If the full load current is 20 A, the difference of induced voltage and generator is 20 V. 60 V. 0 V. 40 V. 20 V. 60 V. 0 V. 40 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The induction motor shaft is made of stainless steel. cast iron. mild steel. aluminium. stainless steel. cast iron. mild steel. aluminium. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS