Electrical Machines In DC generator, which component plays the vital role to produce the direct current? Commutator. Yoke. Brush. Armature. Commutator. Yoke. Brush. Armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon both 2 and 3 supply frequency maximum flux density load current both 2 and 3 supply frequency maximum flux density load current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the temperature of armature resistance is increased, the speed of a series motor would not change. increase. None of above. decrease. not change. increase. None of above. decrease. 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. can not be determined. 234.76 N-m. 266.20 N-m. 133.22 N-m can not be determined. 234.76 N-m. 266.20 N-m. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator if field winding attains the critical resistance field winding will burn. the voltage generated will be zero. machine will generate maximum voltage. machine will generate maximum power. field winding will burn. the voltage generated will be zero. machine will generate maximum voltage. machine will generate maximum power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 20 V 50 V 40 V zero 20 V 50 V 40 V zero ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS