Electrical Machines A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 250 A. 460 A. 340 A. 570 A. 250 A. 460 A. 340 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the armature of DC motor is directly proportional to The speed of motor. The voltage across the terminals. None of above. The torque required. The speed of motor. The voltage across the terminals. None of above. The torque required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC motor used for shears and punches is Differential compound motor. Shunt motor. Series motor. Cummulative compound motor. Differential compound motor. Shunt motor. Series motor. Cummulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor the speed can be increased by Increasing the field current. Decreasing the field current. Increasing the field current. Increasing the armature current. Increasing the field current. Decreasing the field current. Increasing the field current. Increasing the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be 3.2% and -1.6% 6% and -4% None of these 4.8% and -3.2% 3.2% and -1.6% 6% and -4% None of these 4.8% and -3.2% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is none of these. lesser than power transformer. higher than power transformer. equal as power transformer. none of these. lesser than power transformer. higher than power transformer. equal as power transformer. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS