Electrical Machines The speed of a cumulatively compound DC motor can be controlled by varying Armature voltage control. Armature resistance control. Shunt field resistance control. Any of above. Armature voltage control. Armature resistance control. Shunt field resistance control. Any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 10° 30° 60° 45° 10° 30° 60° 45° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Motor 3 point starter is used to limit the starting current to a safer value. all of above. provide overload protection. provide protection against Low-Voltage. limit the starting current to a safer value. all of above. provide overload protection. provide protection against Low-Voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake both 1 and 2 None of these reversing drive non reversing drive both 1 and 2 None of these reversing drive non reversing drive ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1000 1203 1200 1080 1000 1203 1200 1080 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The heat transfer by convection in a transformer least depends on air velocity. surface area. color of the paint. temperature difference. air velocity. surface area. color of the paint. temperature difference. ANSWER DOWNLOAD EXAMIANS APP
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