Electrical Machines For power factor improvement the synchronous motor is to be heavily loaded and underexcited heavily loaded and over excited lightly loaded and underecited lightly loaded and over excited heavily loaded and underexcited heavily loaded and over excited lightly loaded and underecited lightly loaded and over excited ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Satisfactory commutation of DC machine requires brushes should be of proper grade and size. brushes should smoothly run in the holders. All of these smooth, concentric commutator properly undercut. brushes should be of proper grade and size. brushes should smoothly run in the holders. All of these smooth, concentric commutator properly undercut. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Belt conveyors offer _______________ starting torque. zero. medium. low. high. zero. medium. low. high. 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, 5 1, 3, 5 1, 4, 6 1, 2, 6 1, 2, 5 1, 3, 5 1, 4, 6 1, 2, 6 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss will depends on f² f f³ f1.6 f² f f³ f1.6 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is prefered for which of the following rating? low current and high voltage high current and high voltage high current and low voltage low current and low voltage low current and high voltage high current and high voltage high current and low voltage low current and low voltage ANSWER DOWNLOAD EXAMIANS APP
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