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 __________________. remains unchanged. kept constant to certain value. increased. decreased. remains unchanged. kept constant to certain value. increased. decreased. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is series connected. shunt connected. deferentially compounded. cumulatively compounded. series connected. shunt connected. deferentially compounded. cumulatively compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does the use the of height flux density value in transformer design lead to? Reduced iron loss. Increase in weight/KVA. Reduced copper loss. Decrease in weight/KVA. Reduced iron loss. Increase in weight/KVA. Reduced copper loss. Decrease in weight/KVA. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The oscillation in a synchronous motor can be damped out by running the motor on leading power factors. providing damper bars in the rotor pole faces. maintaining constant excitation. oscillation cannot be damped. running the motor on leading power factors. providing damper bars in the rotor pole faces. maintaining constant excitation. oscillation cannot be damped. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between None of these magnetizing electric current and back emf. the rotating stator flux and rotor flux. the supply voltage and the back emf. None of these magnetizing electric current and back emf. the rotating stator flux and rotor flux. the supply voltage and the back emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following DC Motor the ratio of starting torque to full load torque is minimum? Shunt motor. Cumulative compound motor. Series motor. Differential compound motor. Shunt motor. Cumulative compound motor. Series motor. Differential compound motor. ANSWER DOWNLOAD EXAMIANS APP
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