Electrical Machines Which of the following motor used in hair dryers? Cage induction motor. Shaded pole IM. Split phase IM. Synchronous motors. Cage induction motor. Shaded pole IM. Split phase IM. Synchronous motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings is placed in which part of a D.C motor? On yoke in the pole faces. On yoke in the inter pole gap. None of these On armature. On yoke in the pole faces. On yoke in the inter pole gap. None of these On armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2.5Hz 50Hz 1 Hz 2HZ 2.5Hz 50Hz 1 Hz 2HZ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eddy current loss will depends on Flux density Thickness All of these Frequency Flux density Thickness All of these Frequency 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, 4, 6 1, 2, 6 1, 3, 5 1, 2, 5 1, 4, 6 1, 2, 6 1, 3, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a 3 - Φ wound induction motor is provided with single phase winding. heavy short-circuited end rings. heavy copper or aluminium bars placed in rotor slots. three phase winding. single phase winding. heavy short-circuited end rings. heavy copper or aluminium bars placed in rotor slots. three phase winding. ANSWER DOWNLOAD EXAMIANS APP
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