Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 600 60 40 660 600 60 40 660 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor Decrease. None of these. Remains same. Increase. Decrease. None of these. Remains same. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Select the motor that should not be started on no load? Shunt motor. Series motor. Brushless DC motor. Compound motor. Shunt motor. Series motor. Brushless DC motor. Compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be Any where between 75 % and 90 %. Around 90 % Around 100 %. Less than 50 % Any where between 75 % and 90 %. Around 90 % Around 100 %. Less than 50 % ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 266.20 N-m. 133.22 N-m cant be determined. 234.76 N-m. 266.20 N-m. 133.22 N-m cant be determined. 234.76 N-m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an ideal DC generator the regulation is high. positive. low. zero. high. positive. low. zero. ANSWER DOWNLOAD EXAMIANS APP
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