Electrical Machines The material used for commutator brushes is mostly carbon. copper. mica. cast iron. carbon. copper. mica. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for separately excited motors. shunt motors. series motors. differential compound motors. separately excited motors. shunt motors. series motors. differential compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is synchronous generator. synchronous motor. asynchronous generator. asynchronous motor. synchronous generator. synchronous motor. asynchronous generator. asynchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor hunting can be reduced to minimum possible by providing damper winding in the rotor pole faces. designing the motor for adequate synchronizing power. any of above methods. using a flywheel. providing damper winding in the rotor pole faces. designing the motor for adequate synchronizing power. any of above methods. using a flywheel. 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. 234.76 N-m. 133.22 N-m cant be determined. 266.20 N-m. 234.76 N-m. 133.22 N-m cant be determined. 266.20 N-m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake non reversing drive reversing drive None of these both 1 and 2 non reversing drive reversing drive None of these both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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