Electrical Machines The commutator segments of DC machines are made up of copper alloy brass hard-drawn copper copper copper alloy brass hard-drawn copper copper ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? both A and B None of these flux(φ) armature current(Ia) both A and B None of these flux(φ) armature current(Ia) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing compensating winding. high resistance carbon brushes. any one or more of the above methods. inter poles. compensating winding. high resistance carbon brushes. any one or more of the above methods. inter poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machine armature windings are placed on rotor because of the necessity for commutation. development of torque. electromechanical energy conversion. generation of voltage. commutation. development of torque. electromechanical energy conversion. generation of voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following load normally needs starting torque more than rated torque? Centrifugal pumps. Air compressors. Blowers. Conveyers. Centrifugal pumps. Air compressors. Blowers. Conveyers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If input of a transformer is square wave the output will be square wave. pulsed wave. triangular wave. sine wave. square wave. pulsed wave. triangular wave. sine wave. ANSWER DOWNLOAD EXAMIANS APP
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