DC Motors Which method of braking is generally used in elevators? Plugging None of these Regenerative braking Rheostat braking Plugging None of these Regenerative braking Rheostat braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % 80 to 90 % Less than 50% 60 to 70 % 100 % 80 to 90 % Less than 50% 60 to 70 % ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is Directly proportional to flux per pole inversely proportional to flux per pole None of the listed here inversely proportional to applied voltage Directly proportional to flux per pole inversely proportional to flux per pole None of the listed here inversely proportional to applied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating pole winding is connected in Parallel with the armature Series with the armature None of the listed here Series-parallel with the armature Parallel with the armature Series with the armature None of the listed here Series-parallel with the armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. motor which of the following can sustain the maximum temperature rise? Commutator Field winding Slip rings Armature winding Commutator Field winding Slip rings Armature winding ANSWER DOWNLOAD EXAMIANS APP
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