Electrical Machines The torque speed characteristics of a AC servomotor is approximately parabola any of the above hyperbola linearised parabola any of the above hyperbola linearised ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding the speed control of dc motors : 1. ward-leonard method is suitable forconstant-torque drives 2. Ward-leonard method is suitable for constant-power drives 3. field-control method facilitates speed control below base speed 4. Armature-resistance control method is more efficient than ward-leanard method 5. Field-control method is suitable for constant-torque drives 6. Armature-resistance control method is suitable for constant-torque drives From these, the correct answer is 1, 2, 6 1, 4, 6 1, 3, 5 1, 2, 5 1, 2, 6 1, 4, 6 1, 3, 5 1, 2, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC mototr are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor? 15.30%. 18.25%. 14.28%. 16.67%. 15.30%. 18.25%. 14.28%. 16.67%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor is, in general analogous to two winding transformer with secondary short circuited. two winding transformer with secondary open circuited. None of these auto transformer. two winding transformer with secondary short circuited. two winding transformer with secondary open circuited. None of these auto transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator can be considered as rectifier. power pump. prime mover. rotating amplifier. rectifier. power pump. prime mover. rotating amplifier. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, brushes are always placed along armature axis. load axis. magnetic neutral axis. geometrical neutral axis. armature axis. load axis. magnetic neutral axis. geometrical neutral axis. ANSWER DOWNLOAD EXAMIANS APP
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